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What value of c makes the polynomial below a perfect square? x^2 + 14x + c c = A. 49 B. 28 C. 7 D. 196
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5 votes
What value of c makes the polynomial below a perfect square?

x^2 + 14x + c

c =

A. 49
B. 28
C. 7
D. 196

User Juacala
by
7.7k points

2 Answers

2 votes

Answer:

A. 49

Explanation:

Ap3x

User Alex Ilyaev
by
7.5k points
4 votes
The value for c is A. 49. That comes from the process of completing the square where you take half the linear term, square it, and add it in. Our linear term is 14. Half of 14 is 7, and 7 squared is 49. So A
User Sameera Kumarasingha
by
7.9k points
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