\(2x^2.\left(x-1\right)-3x.\left(x^2-2x+3\right)\)
\(=2x^2.x+2x^2.\left(-2\right)+\left(-3x\right).x^2+\left(-3x\right).\left(-2x\right)+\left(-3x.3\right)\)
\(=2x^3-4x^2-3x^3+6x^2-9x\)
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2x2.(x−1)−3x.(x2−2x+3)2x2.(x−1)−3x.(x2−2x+3)
=2x3−4x2−3x3+6x2−9x
=x3+2x2-9x
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