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a) 3(2x-1)+4(1-x)= c) -2x(8-x)-5(x do potęgi2 +3x)=
b) 2(7x+5)-6(x-2)= d) 5(3-2x)-(4x+6)*3=
LICZE NA POMOC ODWDZIECZAM SIĘ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Odpowiedź :

Hej!

a)

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

= 6x - 3 + 4 - 4x =

= 2x + 1

b)

2(7x + 5) - 6(x - 2) =

= 14x + 10 - 6x + 12 =

= 8x + 22

c)

-2x(8 - x) - 5(x² + 3x) =

= -16x + 2x² - 5x² - 15x =

= 3x² - 31x

d)

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

= 15 - 10x - 12x - 18 =

= -22x - 3

Pozdrawiam! - Julka

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