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18 May, 11:17

What value should be added to make a perfect square? x^2+16x

a. 4

b. 8

c. 16

d. 64

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Answers (2)
  1. 18 May, 11:41
    0
    D. 64

    Step-by-step explanation:

    What added together equals 16? 8.

    You will then times 8*8=64.

    64 is your answer.
  2. 18 May, 11:45
    0
    d. 64

    Step-by-step explanation:

    x^2+16x

    The coefficient of the x term is 16

    Divide by 2

    16/2 = 8

    Then square it

    8^2 = 64

    We add 64

    x^2 + 16x + 64

    (x+8) ^2
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