Question

What is the simplified form of the expression?

Answer 1

Well, lets see...

\[\left(\begin{matrix}\huge\color{blue}{ \frac{b}{7} } \\ \end{matrix}\right)^2=\left(\begin{matrix}\huge\color{blue}{ \frac{b^2}{7^2} } \\ \end{matrix}\right)\]

Answer 2

so, I would just put b^2/49