已知x=-4,y=1/4,则x^3×x^4n×(y^n+1)^4=
问题描述:
已知x=-4,y=1/4,则x^3×x^4n×(y^n+1)^4=
答
x^3×x^4n×(y^n+1)^4
=x^(4n+3)×y^(4n+4)
=(-4)^(4n+3)×(1/4)^(4n+4)
=-4^(4n+3)×4^(-4n-4)
=-4^(-1)
=-1/4