Question

equaçoes do 2 grau
(x+x).x=(4+12).4

Answer 1

(x + x).x = (4 + 12) . 4
(2x).x = 16.4
2x² = 64
x² = 64/2
x² = 32
x = √32
x = √16.√2
x = +/- 4√2
x' = 4√2 e x" = - 4√2

R.:
x = + 4√2
x = - 4√2