当x=-2时,求2x^m*(-2x^m)-(-1\2x)^3+(2x^m)^2+(-x^2y^2)*(xy)^2+(-x^2y^3_数学解答

当x=-2时,求2x^m*(-2x^m)-(-1\2x)^3+(2x^m)^2+(-x^2y^2)*(xy)^2+(-x^2y^3)^2*(x^2y)^2

人气：266 ℃　时间：2020-10-02 05:35:47

解答

2x^m*(-2x^m)-(-1\2x)^3+(2x^m)^2+(-x^2y^2)*(xy)^2+(-x^2y^3)^2*(x^2y)^2=-4x^2m+1/(8x^3)+4x^2m-x^4y^4+x^4y^6*x^4y^2=1/(8x^3)+x^4y^4+x^8y^8=1/(8*(-8)) +16y^4+256y^8=-1/64+16y^4+256y^8