Question

Zapisz w jak najprostszj postaci :

a) (x+4)+(2x-6)=

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

c) -(x-2xy)-(4x+xy)+(xy-x)=

d) (x^{2}+2x+1)-(x^{2}-4x+3)=

Answer 1

a)

(x+4)+(2x-6)=

x+4+2x-6=

3x-2

 

b)

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

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

-x-6y+1

 

c)

-(x-2xy)-(4x+xy)+(xy-x)=

-x+2xy-4x-xy+xy-x=

2xy-6x

 

d)

(x^{2}+2x+1)-(x^{2}-4x+3)=

x²+2x+1-x²+4x-3=

6x-2