Question

Решите уравнение:(x+86)^2 +44(x+86)+160=0

Answer 1

Y= x+86
y^2 +44y +160 = 0
D = 44^2 -4*160=1296
√D = +/-36
y = 1/2 (-44 +/- 36)
y1 = - 40 ; x+86 = - 40 ; x =-126
y1 = - 4  ; x+86 = - 4 ; x = - 90
ОТВЕТ x = {- 126 ; -90}