Rozwiąż równania:
a) (3x-2)²-(6-2x)²
b) (2a-1)²-4(a²-1)=2a+1
9x²-12x+4-36+24x-4x²=5x²+12x-32
4a²-4a+1-4a²+4=2a+1
-4a+5=2a+1
6a=4
a=⅔
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a) (3x-2)²-(6-2x)²
9x²-12x+4-36+24x-4x²=5x²+12x-32
b) (2a-1)²-4(a²-1)=2a+1
4a²-4a+1-4a²+4=2a+1
-4a+5=2a+1
6a=4
a=⅔