x(5x-2) - 2x(x+1) =
= 5x²-2x-2x²+2=3x²-2x+2
5x²-2x-2x²-2x=
3x²-4x
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= 5x²-2x-2x²+2=3x²-2x+2
x(5x-2) - 2x(x+1) =
5x²-2x-2x²-2x=
3x²-4x