wyrażenia algebraiczne pomóżcie !! a) (x+4)+(2x-6) b) -(2y+3x)+(-4y+2x+1) c) -(x-2xy)-(4x+xy)+(xy-x) d) (x²+2x+1)-(x²-4x+3)

a) (x+4)+(2x-6) = 3x -2 b) (2y+3x)+(-4y+2x+1) = -2y-3x-4y+2x+1 = -6y-x+ 1 c) -(x-2xy)-(4x+xy)+(xy-x) = -x+2xy-4x-xy+xy-x = -6x+2xy d) (x²+2x+1)-(x²-4x+3) = x²+2x+1-x²+4x-3 = 6x-2

(x+4)+(2x-6) = 3x -2 -(2y+3x)+(-4y+2x+1) = -2y - 3x -4y + 2x + 1 = -6y -1x + 1 -(x-2xy)-(4x+xy)+(xy-x)= -x + 2xy - 4x - xy +xy -x= -6x + 2xy (x²+2x+1)-(x²-4x+3) = x² + 2x + 1 - x² + 4x - 3 = 6x - 2

Dzięki :))