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2) -(2y+3x)+(-4y+2x+1) = -2y-3x-4y+2x+1= -6y-x+1
3) -(x-2x)-(4x+xy) = -x+2x-4x-xy=-3x-xy
4) 4(2x-3)-2(3x+1) =8x-12-6x-2=2x-14
5) -6(2x-3)-2(3x+1) =-12x+18-6x-2=-18x+16
2) -(2y+3x)+(-4y+2x+1) = -2y-3x-4y+2x+1= -6y-x+1
3) -(x-2x)-(4x+xy) = -x+2x-4x-xy= -3x-xy
4) 4(2x-3)-2(3x+1) =8x-12 -(6x-1) = 8x-12-6x+1 = 2x-11
5) -6(2x-3)-2(3x+1) =-12x+18-(-6x-1) = 12x+18+6x+1= 18x+19
6) (x+7)(2x-1) =2xkwadrat -x+14x-7 = 2xkwadrat +13x-7
7) 3+15-5= 13
8)-7+11-6 = -2
9)5-(-12)-7+14= 24
10) -2-(8)-6-3= -19
2) -(2y+3x)+(-4y+2x+1) = -6y+x+1
3) -(x-2x)-(4x+xy) = -3x+xy
4) 4(2x-3)-2(3x+1) = (8x-12)-(6x+2) = 2x-14
5) -6(2x-3)-2(3x+1) = (-12x+18)-(6x+2) = -18x + 16
6) (x+7)(2x-1) = 2x²+14x-x-7=2x²+13x-7
7) 3+15-5= 13
8)-7+11-6 = -2
9)5-(-12)-7+14= 24
10) -2-(8)-6-3= -19