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Answer:
[tex]m^2=4n^4[/tex]Explanation:
Given that;
[tex]m=2n^2[/tex]We want to find m^2
[tex]\begin{gathered} m^2=m\times m \\ since; \\ m=2n^2 \\ substituting,\text{ we have;} \\ m^2=2n^2\times2n^2 \\ m^2=4n^2\times n^2 \\ m^2=4n^4 \end{gathered}[/tex]Therefore;
[tex]m^2=4n^4[/tex]