Zad. Wykonaj działania i przeprowadź redkucję wyrazów podobnych.
a) (2x-1)^3 - (x + 1)^3 + (x + 2)^3 - (x + 2)(x ^2 - 2x + 4)=
^ - do potęgi
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(2x-1)³-(x+1)³+(x+2)³-(x+2)(x²-2x+4)=(2x-1)(2x-1)(2x-1)-(x+1)(x+1)(x+1)+(x+2)(x+2)(x+2)-(x³-2x²+4x+2x²-4x+8)= (4x²-2x-2x+1)(2x-1)-(x²+x+1)(x+1)+(x²+2x+2x+4)(x+2)-(x³-2x²+4x+2x²-4x+8)=8x³-4x²-4x²+2x-4x²+2x+2x-1-(x³+x²+x+x²+x+1)+ x³+2x²+2x²+4x+2x²+4x+4x+8 - x³+2x²-4x-2x²+4x-8= 7x³-8x²+16x-2
7x³-8x²+16x-2