Question

Ajudem com detalhes pls


(x-3).(x+4)+8=x​

Answer 1

Ola!!

(x—3)(x+4)+8=x

x²+4x—3x—12+8=x
x²+x—x—4=0
x²—4=0
x² = 4
x = ±√4
x = ±2

Dúvidas??Comente!!