We are given the following expression
[tex](2a)^2-40b[/tex]Where a = 5 and b = 2
Let us substitute the values of a and b into the above expression
[tex]\begin{gathered} (2a)^2-40b \\ (2\cdot5)^2-40\cdot2 \\ (10)^2-80 \\ (10\times10)-80 \\ 100-80 \\ 20 \end{gathered}[/tex]Therefore, the result of the expression is 20.
