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Which value c makes the expression x² + 2x + c a perfect square trinomial? A) 1 B) 2 C) -4 D) -2​

Which value c makes the expression x² + 2x + c a perfect square trinomial? A) 1 B) 2 C) -4 D) -2​
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Which value c makes the expression x² + 2x + c a perfect square trinomial?

A) 1
B) 2
C) -4
D) -2​

asked
User Niltz
by
7.7k points

1 Answer

5 votes

Answer:

A

Explanation:

Taking c = 1 :

  • x² + 2x + 1
  • x² + x + x + 1
  • x(x + 1) + 1(x + 1)
  • (x + 1)(x + 1)
  • (x + 1)² ⇒ Perfect square trinomial
answered
User Pratik B
by
8.0k points
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