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Q(x) = 2x²-3x+1
a) x³-2x+2x²-3x+1 =
x³+2x²-5x+1
b) x³-2x-(2x²-3x+1)=
x³-2x-2x²+3x-1=
x³-2x²+x-1
c) (x³-2x)(2x²-3x+1)=
2x⁵-3x⁴+x³-4x³+6x²-2x=
2x⁵-3x⁴-3x³+6x²-2x
d) (x³-2x)²=
x⁶-4x⁴+4x²