(1) 2x²(x2+2x-3)(2)-3x(5-2x+x²)(3)(3x²+2y²)×2xy
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![(1) 2x²(x2+2x-3)(2)-3x(5-2x+x²)(3)(3x²+2y²)×2xy](/uploads/image/z/2652743-47-3.jpg?t=%EF%BC%881%EF%BC%89+2x%26%23178%3B%EF%BC%88x2%2B2x-3%EF%BC%89%EF%BC%882%EF%BC%89-3x%EF%BC%885-2x%2Bx%26%23178%3B%EF%BC%89%EF%BC%883%EF%BC%89%EF%BC%883x%26%23178%3B%2B2y%26%23178%3B%EF%BC%89%C3%972xy)
(1) 2x²(x2+2x-3)(2)-3x(5-2x+x²)(3)(3x²+2y²)×2xy
(1) 2x²(x2+2x-3)
(2)-3x(5-2x+x²)
(3)(3x²+2y²)×2xy
(1) 2x²(x2+2x-3)(2)-3x(5-2x+x²)(3)(3x²+2y²)×2xy
1) 2x²(x2+2x-3)=8x立方-6x平方
(2)-3x(5-2x+x²)=-15x+6x平方-3x立方
(3)(3x²+2y²)×2xy=6x立方y+4xy立方