Question

2x+3(-x²-1)=-{3x²+2(x-1)-3(x+2)}

Answer 1

2x-3x^2-3= - {3x^2+2x-2-3x-6}
2x-3x^2-3= - {3x^2-x-8}
-3x^2+2x-3= -3x^2+x+8
-3x^2+3x^2+2x-x=8+3
x=11