1. 8p-(6p^2+16p-15p-40)=8p-6p^2-p+40=7p-6p^2+40
2. 4x^2-8x+10x-20+20=4x^2+2x=2x(2x+1)
3. x^2-3x+5x-15-x^2-x=x-15
4.a^2-3a+a^2+a+4a+4=2a^2+2a+4
1. 8p-(6p^2+16p-15p-40)=8p-6p^2-p+40=7p-6p^2+40
2. 4x^2-8x+10x-20+20=4x^2+2x=2x(2x+1)
3. x^2-3x+5x-15-x^2-x=x-15
4.a^2-3a+a^2+a+4a+4=2a^2+2a+4