Question

Resolva 2.(x+3)^2 por favooor

Answer 1

2(x+3)² - 5(x+3) + 2 = 0
2(x² + 6x + 9) - 5x - 15 + 2 = 0
2x² + 12x + 18 - 5x - 15 + 2 = 0
2x² + 7x + 5 = 0

Δ= 49- 40 = 9
√Δ= ±√9 = ±3

x' = (-7-3)/4 = -10/4= -5/2
x"= (-7+3)/4 = -4/4 = - 1

x = - 5/2   
x = -1