Question

Desenvolva o produto notável: (6+r^2)^2

Answer 1

$\Large\boxed{\begin{array}{l}\sf(6+r^2)^2=6^2+2\cdot 6\cdot r^2+(r^2)^2\\\sf(6+r^2)^2=36+12r^2+r^4\end{array}}$