-4(qp+pr)+(4qp+pr)
=-4qp-4pr+4qp+pr
= -3pr
-5(x-2y+1)-(1-3x+4y)
=-5x+10y-5-1+3x-4y
= -2x+6y-6
1-3(x-(1/2)y^2)+(-x+(1/2)y^2)
=1-3x+3y^2/2-x+y^2/2
=1-4x+2y^2
-4(qp+pr)+(4qp+pr)
=-4qp-4pr+4qp+pr
= -3pr
-5(x-2y+1)-(1-3x+4y)
=-5x+10y-5-1+3x-4y
= -2x+6y-6
1-3(x-(1/2)y^2)+(-x+(1/2)y^2)
=1-3x+3y^2/2-x+y^2/2
=1-4x+2y^2