Question

(x + 1).(x+1)=-15 + 2 x

me Ajuda pfv​

Answer 1

Resposta:

(x + 1) . (x + 1) = - 15 + 2x

x² + 2x + 1 = - 15 + 2x

x² + 2x + 1 - 1 = 0

x² + 2x = - 15x + 2x - 1

x² + 2x = 2x - 16

x² + 2x = 16 - 2x

x² = - 16

x = √-16

x = -√-16

x = 4, x = - 4