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12 July, 08:09

Select the values for p, q, and r that will make the following equation true.

px2 + qx + r = (3x + 1) (x - 5)

A. p = 3

B. p = 4

C. q = - 16

D. 9 = - 14

E. r = - 5

F. r = - 4

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Answers (1)
  1. 12 July, 10:21
    0
    P = 3

    Q = - 14

    R = - 5

    Step-by-step explanation:

    Just solve the equation on the right side, you'll get:

    =3x^2 - 15x + x - 5

    =3x^2 - 14x - 5

    Now compare it to the equation on the left side,

    The coefficient of x^2 on the left is "p", on the right that we just solved is 3.

    Same for "q" which is the coefficient on the left, on the right it's - 14.

    And for "r" it's - 5 from the equation on the right.
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