x(x+4)(x-4)-(x+3)(x^2-6x+9)+5x^3 y^2除以x^2y^2,其中x=-3 化简求值

zorro05742022-10-04 11:39:541条回答

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jackiecheng 共回答了17个问题 | 采纳率76.5%: x(x-4)(x+4)-(x+3)(x^2-6x+9)-3x^2y^2÷(xy^2) =x(x^2-16)-(x+3)(x-3)^2-3x =x^3-16x-(x^2-9)(x-3)-3x =x^3-16x-x^3+3x^2+9x-27-3x =3x^2-10x-27 =3*(-3)^2-10*(-3)-27 =27+30-27 =30 请点击“采纳为答案”.; 1年前

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