作业帮化简(3x^3-x^2y) / (3x^3+2x^2y-xy^2) = ( ) / (x+y)（ x(3x-y)≠0 ）
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/04 18:26:31
化简(3x^3-x^2y) / (3x^3+2x^2y-xy^2) = ( ) / (x+y)（ x(3x-y)≠0 ）
化简(3x^3-x^2y) / (3x^3+2x^2y-xy^2) = ( ) / (x+y)
（ x(3x-y)≠0 ）
化简(3x^3-x^2y) / (3x^3+2x^2y-xy^2) = ( ) / (x+y)（ x(3x-y)≠0 ）
化简(3x^3-x^2y) / (3x^3+2x^2y-xy^2) = ( ) / (x+y)
(3x^3-x^2y) / (3x^3+2x^2y-xy^2)
=(3x-y)x^2/[x(3x^2+2xy-y^2)]
=(3x-y)x^2/[x(3x-y)(x+y)]
=x/(x+y)
=[x^2(3x-y)]/[x(3x^2+2xy-y^2)]
=x(3x-y)/[(3x-y)(x+y)]
=x/(x+y)
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