Question

usun nawiasy (x+2y-3)-(2x-3y+1)= (2y-3x+4)-(2x-3y-2)= (x2-2x+3)-(2x2+3x-1)= (11x-2y)-(3x-5y)= (3x-2y+5z)-(x-5y-6z)= 21x2-(35x+12x2)-(14x-32x2)= (2x-3y)-(-5x+3y)= 6m-(2m+1)-(m-4)=

Answer 1

(x+2y-3)-(2x-3y+1)= x+2y-3-2x+3y-1= -x+5y-4

(2y-3x+4)-(2x-3y-2)=2y-3x+4-2x+3y+2= 5y-5x+6

(x2-2x+3)-(2x2+3x-1)=x2-2x+3-2x2-3x+1= -x2-5x+4

(11x-2y)-(3x-5y)=11x-2y-3x+5y=9x+3y

(3x-2y+5z)-(x-5y-6z)=3x-2y+5z-x+5y+6z=2x+3y+11z

21x2-(35x+12x2)-(14x-32x2)=21x2-35x-12x2-14x+32x2=41x2-49x

(2x-3y)-(-5x+3y)= 2x-3y+5x-3y=7x

6m-(2m+1)-(m-4)=6m-2m-1-m+4=3m+4

Answer 2

x+2y-3-2x+3y-1=-x+5y-4

2y-3x+4-2x+3y+2=5y-5x+6

x2-2x+3-2x2-3x+1=-x2-5x+4

11x-2y-3x+5y=8x+3y

3x-2y+5z-x+5y+6z=2x+3y+11z

21x2-35x-12x2-14x+32x2=41x2-49x

2x-3y+5x-3y=7x-6y

6m-2m-1-m+4=3m+3