A Quiz On Factoring By AC Method

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| Written by Tjkim

Tjkim

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Quizzes Created: 25 | Total Attempts: 57,155

Questions: 10 | Attempts: 2,377 | Updated: Sep 28, 2023

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This quiz is designed to test your understanding of the AC method for factoring quadratic equations. It includes questions about the process, steps, and calculations involved in the AC method. You will also encounter practical application questions, where you are asked to factorize specific quadratic equations using the method. The quiz will challenge your ability to identify the correct pair of numbers that satisfy the conditions of the AC method and transform quadratic equations into their factored forms. Remember, this method is a powerful tool for simplifying complex quadratic equations, so give it your best shot!

Questions and Answers

1.

What do A, B, and C represent in the quadratic equation in the AC Method?
- A.
  
  The x-values
- B.
  
  The coefficients
- C.
  
  The roots
- D.
  
  The y-values
Correct Answer
B. The coefficients

Explanation
In the quadratic equation in the AC Method, A, B, and C represent the coefficients. The coefficients are the constants that multiply the variables in the equation. A represents the coefficient of the quadratic term, B represents the coefficient of the linear term, and C represents the constant term. These coefficients determine the shape and position of the quadratic curve. The x-values and y-values, on the other hand, represent the values of the variables and the corresponding output of the equation, respectively.

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2.

What is the correct expression to solve for in the AC Method?
- A.
  
  Ac - b
- B.
  
  Ab + c
- C.
  
  Ac + b
- D.
  
  A + b + c
Correct Answer
C. Ac + b

Explanation
The correct expression to solve for in the AC Method is ac + b. This method is used to factor quadratic equations of the form ax^2 + bx + c. The AC Method involves finding two numbers, a and c, whose product is equal to ac and whose sum is equal to b. By factoring the quadratic equation using these two numbers, we can find the roots of the equation. Therefore, the correct expression to solve for in the AC Method is ac + b.

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3.

What is the first step in the AC method of factoring?
- A.
  
  Write in standard form
- B.
  
  Find the roots
- C.
  
  Factorize
- D.
  
  Find the y-intercept
Correct Answer
A. Write in standard form

Explanation
The first step in the AC method of factoring is to write the given equation in standard form. This involves rearranging the terms of the equation so that the highest power of the variable is on the left side and the constant term is on the right side. By doing this, it becomes easier to identify the coefficients of the quadratic equation and proceed with factoring.

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4.

The quadratic equation is x² - 7x + 10 = 0. What is the value of AC?
- A.
  
  10
- B.
  
  -10
- C.
  
  7
- D.
  
  -7
Correct Answer
A. 10

Explanation
In the given quadratic equation x² - 7x + 10 = 0, AC refers to the constant term. The constant term is the term that does not have a variable attached to it. In this equation, the constant term is 10. Therefore, the value of AC is 10.

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5.

The quadratic equation is 3x² - 11x - 4 = 0. Which pair adds up to -11 and multiplies to -12?
- A.
  
  -12 and 1
- B.
  
  -3 and 4
- C.
  
  -4 and 3
- D.
  
  -8 and 3
Correct Answer
D. -8 and 3

Explanation
The quadratic equation is in the form ax² + bx + c = 0. In this case, a = 3, b = -11, and c = -4. We need to find two numbers that add up to -11 and multiply to -12, which are the coefficients of x. The pair that satisfies this condition is -8 and 3. When we substitute these values into the equation, we get 3x² - 8x + 3x - 4 = 0, which simplifies to 3x² - 5x - 4 = 0. Therefore, -8 and 3 are the correct pair.

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6.

Using the AC method, what is the factored form of the quadratic equation x² - 8x + 15 = 0?
- A.
  
  (x - 5)(x - 3)
- B.
  
  (x + 5)(x - 3)
- C.
  
  (x + 5)(x + 3)
- D.
  
  (x - 3)(x - 5)
Correct Answer
A. (x - 5)(x - 3)

Explanation
The factored form of a quadratic equation can be found using the AC method, which involves finding two numbers that multiply to give the product of the coefficient of x² and the constant term (in this case, 1 * 15 = 15) and also add up to give the coefficient of x (in this case, -8). The numbers that satisfy these conditions are -5 and -3. Therefore, the factored form of the quadratic equation x² - 8x + 15 = 0 is (x - 5)(x - 3).

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7.

If a = 5, b = 6, and c = 1, which pair of numbers adds up to 6 and multiplies to 5?
- A.
  
  1 and 5
- B.
  
  2 and 3
- C.
  
  -2 and 7
- D.
  
  -1 and -5
Correct Answer
B. 2 and 3

Explanation
The pair of numbers 2 and 3 adds up to 6 (2 + 3 = 5) and multiplies to 5 (2 * 3 = 6).

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8.

What is the factored form of the equation 2x² - 7x - 3 using the AC method?
- A.
  
  (2x + 1)(x - 3)
- B.
  
  (x - 2)(2x + 3)
- C.
  
  (x + 2)(2x - 3)
- D.
  
  (2x - 1)(x + 3)
Correct Answer
D. (2x - 1)(x + 3)

Explanation
The factored form of the equation 2x² - 7x - 3 using the AC method is (2x - 1)(x + 3). This can be found by finding two numbers whose product is equal to the product of the coefficient of the x² term (2) and the constant term (-3), which is -6. The numbers that satisfy this condition are -1 and 6. Then, these numbers are used to split the middle term (-7x) into two terms (-1x and -6x) and factor by grouping. This leads to the factored form of (2x - 1)(x + 3).

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9.

For the quadratic equation 3x² - x - 2 = 0, what is the value of AC in the AC method?
- A.
  
  -6
- B.
  
  6
- C.
  
  -3
- D.
  
  3
Correct Answer
A. -6

Explanation
In the AC method, we need to find two numbers, A and C, such that their product is equal to the product of the coefficient of x² and the constant term (in this case, 3 * -2 = -6). Additionally, these two numbers must add up to the coefficient of x (in this case, -1). By trial and error, we can determine that the numbers -3 and 2 satisfy these conditions (-3 * 2 = -6 and -3 + 2 = -1). Therefore, the value of AC in the AC method for this quadratic equation is -6.

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10.

The quadratic equation is 2x² + 5x - 3 = 0. What pair adds up to 5 and multiplies to -6?
- A.
  
  -1 and 6
- B.
  
  2 and 3
- C.
  
  -3 and 8
- D.
  
  -2 and 7
Correct Answer
A. -1 and 6

Explanation
The pair -1 and 6 adds up to 5 and multiplies to -6. In the given quadratic equation, the coefficient of x is 5 and the constant term is -3. By factoring the quadratic equation, we need to find two numbers that add up to 5 and multiply to -6. The pair -1 and 6 satisfies these conditions, as -1 + 6 = 5 and -1 * 6 = -6. Therefore, the pair -1 and 6 is the correct answer.

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A Quiz On Factoring By AC Method

What do A, B, and C represent in the quadratic equation in the AC Method?

What is the correct expression to solve for in the AC Method?

What is the first step in the AC method of factoring?

The quadratic equation is x² - 7x + 10 = 0. What is the value of AC?

The quadratic equation is 3x² - 11x - 4 = 0. Which pair adds up to -11 and multiplies to -12?

Using the AC method, what is the factored form of the quadratic equation x² - 8x + 15 = 0?

If a = 5, b = 6, and c = 1, which pair of numbers adds up to 6 and multiplies to 5?

What is the factored form of the equation 2x² - 7x - 3 using the AC method?

For the quadratic equation 3x² - x - 2 = 0, what is the value of AC in the AC method?

The quadratic equation is 2x² + 5x - 3 = 0. What pair adds up to 5 and multiplies to -6?