Question

Solve for x.
x ^2 + 8x + 16 = 25

Answer 1

1

Answer 2

there's 2 answers

Answer 3

1,-9

Answer 4

x^2 - 8x + 16 = 25 (factor left side as perfect square trinomial)
(x - 4)^2 = 25 (square root both sides)
x - 4 = ±5 (add 4 to both sides)
x = 4 ± 5
x = 4 + 5 or y = 4 - 5
x = 9 or y = -1 <===You answer :)

Hope it helps!

Answer 5

thanks :)

Answer 6

your welcome!