x^2y\8xy^2 -x^2\2y^4 =八xy的二次方分之x的二次方y减去二y的四次方分之x的二次方（八年级数学下课本P22练习2（1）
2019-05-22
x^2y\8xy^2 -x^2\2y^4 =
八xy的二次方分之x的二次方y减去二y的四次方分之x的二次方（八年级数学下课本P22练习2（1）
优质解答
x^2y\8xy^2 =x\8y
减去x^2\2y^4,通分,xy^3\8y^4-4x^2\8y^4,=(xy^3-4x^2)\8y^4
x^2y\8xy^2 =x\8y
减去x^2\2y^4,通分,xy^3\8y^4-4x^2\8y^4,=(xy^3-4x^2)\8y^4