Question

-3x^2-14x-7=(x-1)^2 помогите))

Answer 1

-3x²-14x-7=x²-2x+1
-4x²-12x-8=0 (: (-4)
x²+3x+2=0
X1+X2=-3
X1*X2=2
X1=-1
X2=-2