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22 October, 10:54

What value of c makes the polynomial below a perfect square?

x2 + 10x + c

c =

A.

25

B.

20

C.

5

D.

100

+4
Answers (1)
  1. 22 October, 11:12
    0
    To find the last term in order to obtain the perfect square, take the middle term, divide it by 2, and take its square.

    10 : 2 = 5

    5^2 = 25

    Thus, the equation would be x^2 + 10x + 25

    The answer is A.
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