Ulangan Persamaan Dan Pertidaksamaan Linear Dan Kuadrat

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| By Abuazam
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Abuazam
Community Contributor
Quizzes Created: 1 | Total Attempts: 464
Questions: 12 | Attempts: 464

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Ulangan Persamaan Dan Pertidaksamaan Linear Dan Kuadrat - Quiz

Selamat mengerjakan soal-soal ulangan ini. Semoga sukses dan selamat mengerjakan!Jangan lupa berdoa ya!


Questions and Answers
  • 1. 

    Seorang pedagang membeli 300 buah jeruk, ternyata 15 buah diantaranya busuk. Kemudian terjual sebanyak x buah dan sisanya 100 buah. Tentukan persamaan yang mungkin untuk menggambarkan keadaan ini!

  • 2. 

    Perhatikan soal berikut ini!Luas sebuah persegi panjang adalah 45 cm2. Panjangnya lebih 5 cm dari lebarnya. Jika panjang = x cm. Tentukan persamaan yang sesuai dengan keadaan di atas!

  • 3. 

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

    • A.

      1

    • B.

      3

    • C.

      5

    • D.

      6

    • E.

      7

    Correct Answer
    E. 7
    Explanation
    Terima kasih sudah menjawab soal ini!

    Rate this question:

  • 4. 

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

    • A.

      X>12

    • B.

      X

    • C.

      X>-12

    • D.

      X

    • E.

      X

    Correct Answer
    C. X>-12
    Explanation
    The inequality 2x + 3 < 27 + 4x can be simplified by subtracting 2x from both sides, resulting in 3 < 27 + 2x. Then, subtracting 27 from both sides gives -24 < 2x. Finally, dividing both sides by 2 gives -12 < x, which can be written as x > -12. Therefore, the solution set for the given inequality is x > -12.

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  • 5. 

    Jawablah pertanyaannya :)

    • A.

      Option 1

    • B.

      Option 2

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    C. Option 3
    Explanation
    Sukses ya :)

    Rate this question:

  • 6. 

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

    • A.

      {3,-4}

    • B.

      {-3,4}

    • C.

      {-3,-4}

    • D.

      {3,4}

    • E.

      {3,2}

    Correct Answer
    A. {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}.

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  • 7. 

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

    • A.

      A = -½ ; akar yang lain 4

    • B.

      A = -½ ; akar yang lain 6

    • C.

      A = ½ ; akar yang lain -2

    • D.

      A = ½ ; akar yang lain 2

    • E.

      A = 2 ; akar yang lain -4

    Correct Answer
    D. A = ½ ; 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.

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  • 8. 

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

    • A.

      26

    • B.

      37

    • C.

      41

    • D.

      46

    • E.

      56

    Correct Answer
    D. 46
    Explanation
    Terima kasih sudah menjawab soal ini. Semangat!

    Rate this question:

  • 9. 

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

    • A.

      X^2 – x – 2 = 0

    • B.

      X^2 + x – 2 = 0

    • C.

      X^2 – 2 = 0

    • D.

      X^2 – x + 2 = 0

    • E.

      X^2 + x + 2 = 0

    Correct Answer
    B. X^2 + x – 2 = 0
    Explanation
    Hebat. Sudah menyelesaikan soal ini!

    Rate this question:

  • 10. 

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

    • A.

      {x | 2 < x < 4}

    • B.

      {x | -4 < x < 2}

    • C.

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

    • D.

      {x | x < 2 atau x > 4}

    • E.

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

    Correct Answer
    D. {x | x < 2 atau x > 4}
    Explanation
    Selamat Anda sudah menyelesaikan soal ini. Semangat ya!

    Rate this question:

  • 11. 

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

    • A.

      Opsi 1

    • B.

      Opsi 2

    • C.

      Opsi 3

    • D.

      Opsi 4

    • E.

      Opsi 5

    Correct Answer
    E. Opsi 5
    Explanation
    Terima kasih sudah mengerjakan soal ini!

    Rate this question:

  • 12. 

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

    • A.

      2

    • B.

      4

    • C.

      7

    • D.

      8

    • E.

      10

    Correct Answer
    B. 4
    Explanation
    Selamat Anda sudah menyelesaikan soal ini!

    Rate this question:

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 07, 2017
    Quiz Created by
    Abuazam
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