计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n
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计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n原式=x^2n(-y
计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n
计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n
计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n
原式=x^2n(-y^3n)-x^2ny^3n
=-x^2ny^3n-x^2ny^3n
=-2x^2ny^3n
计算:(-x^n)^2(-y^n)^3-(x^2y^3)^n
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