1.(-2m^2*n^-2)^2*(3m^-1*n^3)^-3 2.(-2m^2*n^-2)^2*(3m^-1*n^3)^-3 上面那是错的
问题描述:
1.(-2m^2*n^-2)^2*(3m^-1*n^3)^-3 2.
(-2m^2*n^-2)^2*(3m^-1*n^3)^-3 上面那是错的
答
原式=2M^4*N^4*3M^(-3)*N^(-9)
=6M*N^(-5)
答
(-2m^2*n^-2)^2*(3m^-1*n^3)^-3
=4m^4*n^(-4)*(1/27)*m^3*n^9
=4/27*m^7*n^5