wykonaj działania:
a) x(x-2) + (x-2)(x-1)=
b)(x+2)do potęgi 2 -3(x-1) do potęgi2+(x-2)(x+2) =
a) x(x-2) + (x-2)(x-1)=x²-2x+x²-x-2x+2=2x²-5x+2
b)(x+2)do potęgi 2 -3(x-1) do potęgi2+(x-2)(x+2) =x²+4x+4-3(x²-2x+1)+x²-4=2x²+4x-3x²+6x-3=-x²+10x-3
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a) x(x-2) + (x-2)(x-1)=x²-2x+x²-x-2x+2=2x²-5x+2
b)(x+2)do potęgi 2 -3(x-1) do potęgi2+(x-2)(x+2) =x²+4x+4-3(x²-2x+1)+x²-4=2x²+4x-3x²+6x-3=-x²+10x-3