Question

2(x+3)² - 5(x+3) + 2=0

Answer 1

2 ( x + 3 ) 2 - 5 ( x + 3 ) + 2 = 0
2 ( x2+ 6x + 9 ) - 5 (x + 3 ) + 2 = 0
2x2 + 12x + 18 - 5x - 15 + 2 = 0
2x2+ 7x + 5 = 0
∆ = 49 - 40
∆ = 9
X1 = ( - 7 + 3 ) / 4
X1 = - 4 / 4
X1 = - 1

X2 = ( - 7 - 3 ) /4
X2 = - 10 / 4 ( simplificar)
X2= - 5 / 2