Question 1081352
I'm assuming your exponent should be a 2(?).
{{{(-x^2+4x-5)-(x^2+2x-2)=(-x^2-x^2)+(4x-2x)+(-5-(-2))}}}
{{{(-x^2+4x-5)-(x^2+2x-2)=(-2x^2)+(2x)+(-5+2)}}}
{{{(-x^2+4x-5)-(x^2+2x-2)=(-2x^2)+(2x)+(-3)}}}
{{{(-x^2+4x-5)-(x^2+2x-2)=-2x^2+2x-3}}}