PROSZĘ O POMOC !!!!! DAM NAJ !!!
ROZWIĄŻ RÓWNANIA :
A) 3(4x+8)+2(5x+3)=2(3x+10)+3(3x+15)
B) 2(8-x)-3(9-x)=0
C)(y-1)²=(y+2)(y-2)
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3(4x+8)+2(5x+3)=2(3x+10)+3(3x+15)
12x+24+10x+6=6x+20+9x+45
12x+10x-6x-9x=45+20-6-24
7x=35 / :7
x=5
2(8-x)-3(9-x)=0
16-2x-27+3x=0
x=27-16
x=11
(y-1)²=(y+2)(y-2
y²-2y+1=y²-4
-2y=-5 /: (-2)
y=5/2