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What value of c makes the polynomial below a perfect square? x2 + 10x + c c = A. 25 B. 20 C. 5 D. 100

What value of c makes the polynomial below a perfect square? x2 + 10x + c c = A. 25 B. 20 C. 5 D. 100
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3 votes
What value of c makes the polynomial below a perfect square?

x2 + 10x + c

c =







A.

25








B.

20








C.

5








D.

100

User RiQQ
by
7.6k points

1 Answer

5 votes
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.
User Shivam Pandya
by
8.0k points
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