Question 763260
[(-5x^2+3x+4)-(-3x^2-12x-4)]-(x^2+2x+8)


[-5x^2+3x+4+3x^2+12x+4]-(x^2+2x+8)


[-2x^2+15x+8]-(x^2+2x+8)


-2x^2+15x+8-x^2-2x-8


-3x^2+13x


Answer: -3x^2+13x