Question

(x+3)^2 = 81 hallar x

Answer 1

(x+3)² = 81

resolviendo

x²+ 6x +9 = 81

x²+ 6x - 72 = 0

(x + 12)(x - 6) = 0

x1 = -12

x2 = 6

Answer 2

Respuesta:

(x+3)²=81

×+3=√81

x+3=9

x=9-3

x=6