Zapisz w jak najprostszej postaci. NA JUTRO PROSZĘĘĘĘĘĘĘĘĘĘ!!!!!!!!!!!!!!!!!!!!!!!!! a) (a+b)-(2a-b)-(a-2b) b) (3x-y+1)-(x+y)+(y-x) c) -(kx+ny)-(3kx+2ny)+(5kx-3ny) d) (2ab+a+3)-(3ab-a+3) e) (4xkwadrat-3x)-(x+0,1xkwadrat)-(xkwadrat-0,1x)

a) (a+b)-(2a-b)-(a-2b)=a+b-2a+b-a+2b= =-2a+4b b) (3x-y+1)-(x+y)+(y-x)=3x-y+1-x-y+y-x= =x-y+1 c) -(kx+ny)-(3kx+2ny)+(5kx-3ny)= = -kx-ny-3kx-2ny+5kx-3ny=kx-6ny d) (2ab+a+3)-(3ab-a+3)= =2ab+a+3-3ab+a-3=-ab+2a e) (4x^2-3x)-(x+0,1x^2)-(x^2-0,1x)= =4x^2-3x-x-0,1x^2-x^2+0,1x= =2,9x^2-3,9x