(x-1)(x-2)(x-3)-(x+1)2+2(x-1)2 (x2+4x-1)(x-1)+(6x2+2x-3)(2x-1) za nawiasami jet do kwadratu a w drugim przykładnie też w nawiasach
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(x-1)*(x-2)*(x-3)-(x+1)*2+2*(x-1)2=-x*(-2x)*2x*2+2=-3x*2x*4=-6x*4