1/(x-y)+1/(x+y)+2x/(x^2+y^2)+4x^3/(x^4+y^4)化简_数学解答

1/(x-y)+1/(x+y)+2x/(x^2+y^2)+4x^3/(x^4+y^4)
化简

人气：307 ℃　时间：2020-05-27 03:23:10

解答

原式=2x/(x^2-y^2)+2x/(x^2+y^2)+4x^3/(x^4+y^4)
=4x^3/(x^4-y^4)+4x^3/(x^4+y^4)
=8x^7/(x^8-y^8)