Nissanmax915 Nissanmax915

21-05-2022
Mathematics

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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

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Аноним Аноним

21-05-2022

Answer:

A

Step-by-step 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

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