zapisz w jak najprostszej postaci
c)2x(x-8)+3(-x^2+2x)-(x-2)x
d)5(3-2x)-(4x+6)*3
e)-(2a^2-3ab)-(2b-3a^2)+(ab-b)
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c)2x(x-8)+3(-x^2+2x)-(x-2)x = 2x²-16x -3x²+6x-x²+2x = -2x²-10x
d)5(3-2x)-(4x+6)*3 = 15-10x-12x-18 = -22x-3
e)-(2a^2-3ab)-(2b-3a^2)+(ab-b) = -2a²+3ab-2b+3a²+ab-b = a²+4ab-3b