Question

Which expressions are perfect square trinomials? Check all that apply.

x2 + 16x + 8
x2 + 14x + 49
x2 – 5x + 25
x2 – 24x + 144
x2 + 9x – 81

Answer 1

Answer: x^2 + 14x + 49.

x^2 - 24x + 144.

Explanation:

Answer 2

x^2 + 14x + 49.

x^2 - 24x + 144.

Explanation:

x^2 + 14x + 49 = (x + 7)^2

x^2 - 24x + 144 = (x - 12)^2