Question

przeksztalc wyrazenie i wpisz wynik w najprostszej postaci

a) 2(a-2b)-7(3a-b)=

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

c) 5(x+2y-3z)-2(4x-3y+z)=

d)-(k-m-n)+2(k+2m+3n)-kmn=

e)2p(3p-2r)+3r(p-2r)=

blagam pomocy

Answer 1

a)

2a-4b-21a+7b=-19a+3b

 

b)

5x-5y+8x+4y-6x-3y= 7x-4y

 

c)

5x+10y-15z-8x+6y-2z=-3x+16y-17z

 

d)

-k+m+n+2k+4m+6n-kmn= k+5m+7n-kmn

 

e)

6p-4pr+3pr-6r^=6p-pr-6r^

 

 

^-kwadrat

Answer 2

a)=2a-4b-21a+7b=-19a+3b 

b)=5x-5y+8x+4y-6x-3y=7x-4y

c)=5x+10y-15z-8x+6y-2z=-3x+16y-17z

d)=-k+m+n+2k+4m+6n-kmn=k+5m+7n-kmn

e)=6p^-4pr+3pr-6r^=6p^-6r^-pr

 

Liczę na NAJ.