Answer:
x^2 + 6x + 9 and x^2 + 8x + 16 are examples of perfect-square trinomial
Explanation:
1. x2 + 6x + 9
(x + 3)^2
= (x + 3)(x + 3)
= x2 + 6x + 9
2. x^2 + 8x + 16
x^2 + 8x + 16
= x^2 + 2(x)(4) + 4^2
= (x + 4)^2
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