Rozwiąż równanie:
2(x-3)(2x+5)-(2x-1)²
2 (x-3) (2x+5)-(2x-1)²=
2x-6 * 2x+5 - 2x*2x-1*(-1)=
4x-1-4x+1=
0x=0
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2 (x-3) (2x+5)-(2x-1)²=
2x-6 * 2x+5 - 2x*2x-1*(-1)=
4x-1-4x+1=
0x=0