Question

Wyrazenia algebraiczne wyraż w jak najprostrzej postaci 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)(4x2-3x)-(x+0,1x2)-(x2-0,1x)=

Answer 1

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

d)

(2ab+a+3)-(3ab-a+3)=2ab+a+3-3ab+a-3= -ab+2a