Question

simplifique (x+4)2=2(x+5)+6

Answer 1

(x + 4)² = 2(x + 5) + 6
(x + 4)(x + 4) = 2(x + 5) + 6
x² + 4x + 4x + 16 = 2x + 10 + 6
x² + 8x + 16 = 2x + 16
x² + 8x - 2x = 16 - 16
x² + 6x = 0
x(x + 6) = 0

x' = 0

x + 6 = 0
x'' = -6


Espero ter ajudado.
Bons estudos!  : )