Ulangan Persamaan Dan Pertidaksamaan Linear Dan Kuadrat

1. Penyelesaian dari 4x + 5 = 3x + 9 adalah ....

2

4

7

8

10

Selamat Anda sudah menyelesaikan soal ini!

Explanation

Selamat Anda sudah menyelesaikan soal ini!

2. Nilai p dari bentuk 5(p-3)-2(p-3)=12 adalah ....

1

3

5

6

7

Terima kasih sudah menjawab soal ini!

Explanation

Terima kasih sudah menjawab soal ini!

3. Jawablah pertanyaannya :)

Option 1

Option 2

Option 3

Option 4

Sukses ya :)

Explanation

Sukses ya :)

4. Bila x₁ dan x₂ adalah akar-akar persamaan kuadrat x² – 6x – 5 = 0, maka x₁² + x₂² = ....

26

37

41

46

56

Terima kasih sudah menjawab soal ini. Semangat!

Explanation

Terima kasih sudah menjawab soal ini. Semangat!

5. Jika akar-akar persamaan kuadrat adalah 1 dan -2, maka persamaan kuadrat tersebut adalah ....

X^2 – x – 2 = 0

X^2 + x – 2 = 0

X^2 – 2 = 0

X^2 – x + 2 = 0

X^2 + x + 2 = 0

Hebat. Sudah menyelesaikan soal ini!

Explanation

Hebat. Sudah menyelesaikan soal ini!

6. Himpunan penyelesaian dari x² + x – 12 = 0 adalah ....

{3,-4}

{-3,4}

{-3,-4}

{3,4}

{3,2}

The given equation is a quadratic equation in the form of ax^2 + bx + c = 0. By factoring or using the quadratic formula, we can find the solutions for x. In this case, the equation can be factored as (x - 3)(x + 4) = 0. Setting each factor equal to zero, we get x - 3 = 0 and x + 4 = 0. Solving these equations, we find that x = 3 and x = -4. Therefore, the solution set for the equation x^2 + x - 12 = 0 is {3, -4}.

Explanation

The given equation is a quadratic equation in the form of ax^2 + bx + c = 0. By factoring or using the quadratic formula, we can find the solutions for x. In this case, the equation can be factored as (x - 3)(x + 4) = 0. Setting each factor equal to zero, we get x - 3 = 0 and x + 4 = 0. Solving these equations, we find that x = 3 and x = -4. Therefore, the solution set for the equation x^2 + x - 12 = 0 is {3, -4}.

7. Himpunan penyelesaian dari 2x + 3 < 27 + 4x dengan x anggota bilangan bulat adalah ....

X>12

X

X>-12

X

The inequality 2x + 3 -12. Therefore, the solution set for the given inequality is x > -12.

Explanation

The inequality 2x + 3 -12. Therefore, the solution set for the given inequality is x > -12.

8. Himpunan penyelesaian dari pertidaksamaan kuadrat x² – 6x + 8 > 0 adalah ....

{x | 2 < x < 4}

{x | -4 < x < 2}

{x | x < -4 atau x > 4}

{x | x < 2 atau x > 4}

{x | x < -4 atau x > -1}

Selamat Anda sudah menyelesaikan soal ini. Semangat ya!

Explanation

Selamat Anda sudah menyelesaikan soal ini. Semangat ya!

9. Persamaan (m + 2) x² + 6x + 3m = 0 mempunyai akar real, maka nilai m adalah ...

Opsi 1

Opsi 2

Opsi 3

Opsi 4

Opsi 5

Terima kasih sudah mengerjakan soal ini!

Explanation

Terima kasih sudah mengerjakan soal ini!

10. Jika salah satu akar persamaan kuadrat ax² + 5x – 12 = 0 adalah -12, maka ...

A = -½ ; akar yang lain 4

A = -½ ; akar yang lain 6

A = ½ ; akar yang lain -2

A = ½ ; akar yang lain 2

A = 2 ; akar yang lain -4

The given equation is a quadratic equation in the form of ax^2 + bx + c = 0. We are given that one of the roots is -12. According to the Vieta's formulas, the sum of the roots of a quadratic equation is equal to -b/a. In this case, the sum of the roots is -12 + x, where x is the other root. Therefore, we can write the equation as -12 + x = -5/a. Solving for x, we get x = 2. Hence, the other root is 2. We are also given that a = 1/2. Therefore, the correct answer is a = 1/2 ; akar yang lain 2.

Explanation

The given equation is a quadratic equation in the form of ax^2 + bx + c = 0. We are given that one of the roots is -12. According to the Vieta's formulas, the sum of the roots of a quadratic equation is equal to -b/a. In this case, the sum of the roots is -12 + x, where x is the other root. Therefore, we can write the equation as -12 + x = -5/a. Solving for x, we get x = 2. Hence, the other root is 2. We are also given that a = 1/2. Therefore, the correct answer is a = 1/2 ; akar yang lain 2.