Simplified and only positive exponents do not solve

    m^2

.

 3 n^4

Step-by-step explanation:

The easiest approach here to obtain only positive exponents is to invert the entire quantity inside parentheses:

From  the given expression we get the equivalent expression

           1

.

 3 m^(-2) n^4

                                                                                               1

Given that we want only positive exponents, rewrite   as m^2:

                                                                                           m^(-2)

    m^2

.

 3 n^4

This is the final answer.

after simplifying it i got: -36.25 as my answer. hope that !

ummm seems that u didnt post the attachement !