Zad.1.
Zapisz w jak najprostszej postaci:
b) 2(7x+5)-6(x-2)=
c)7(3a-2b+5)=
d)-3(4a-2c-3d)=
Zad.2
Zapisz w jak najprostszej 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)=
Proszę o jak najszybsze odpowiedzi ;d
Z góry dziękuję :)
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Zad. 1
2(7x+5)-6(x-2)= 14x+10-6x+12=8x+22
7(3a-2b+5)=21a-14b+35
-3(4a-2c-3d)=-12a+6c+9d
Zad. 2
(a+b)-(2a-b)-(a-2b)= a+b-2a+b-a+2b=4b
(3x-y+1)-(x+y)+(y-x)=3x-y+z-x-y+y-x=x-y+z
-(kx+ny)-(3kx+2ny)+(5kx-3ny)=-kx-ny-3kx-2ny+5kx-3ny= kx-6ny
(2ab+a+3)-(3ab-a+3)=2ab+a+3-3ab+a+3=-ab+2a+6
zad.1
b) 2(7x+5)-6(x-2)=14x+10-6x+12=8x+22
c)7(3a-2b+5)=21a-14b+35
d)-3(4a-2c-3d)=-12a+6c+9d
druugiego nie umiem : D