Question

(X+2)ao quadro +X=0?como faz?

Answer 1

no x vc bota 0 (0+2)+0=0

Answer 2

( x + 2)² + x = 0
(x)² + 2.2.x. + 2² )  + x = 0
x² + 4x + 4 + x = 0
x² + 5x + 4 = 0 ****
delta = 25 -16 = 9 ou +-V9 = +-3 ****

x = ( -5 +-3)/2
x1 = -8/2 = -4 ****
x2 = -2/2 = -1 ***