Question

Write three like terms of $4m{n}^2$

Answer 1

The variable part in $4m{n}^2$ is $m{n}^2$.
So 3 like terms can be any term with $m{n}^2$.
For example : $0.5m{n}^2$, $8m{n}^2$, $\frac{3}{4}m{n}^2$. and so on.