Question

× elevado A 2 +6×=16

Answer 1

x² + 6x = 16

x² + 6x - 16 = 0

x = - 3 + - √9 + 16

x = - 3 + -√25

x' = - 3 + 5   → x' = 2

x" = - 3 - 5  →  x" = - 8