zapisz w najprostrzej postaci
2x(4x-1)-(x-2)(x+2)=
^ - do potęgi
2x(4x-1)-(x-2)(x+2)=8x^2-2x-(x^2-4)=8x^2-2x-x^2+4= 7x^2-2x+4
8x-2x-x(do kwadratu)-46x-x(do kwadratu)-4
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^ - do potęgi
2x(4x-1)-(x-2)(x+2)=8x^2-2x-(x^2-4)=8x^2-2x-x^2+4= 7x^2-2x+4
8x-2x-x(do kwadratu)-4
6x-x(do kwadratu)-4