Question

196w^2-81z^2

Answer 1

and....?

Answer 2

what do you want to do with it?

Answer 3

\[\huge\color{red}{a}^2-\color{blue}{b}^2=(\color{red}{a}+\color{blue}{b})\times(\color{red}{a}-\color{blue}{b})\]\[\huge\color{green}{196w^2}-\color{orange}{81z^2}=(\color{green}{14w}+\color{orange}{9z})\times(\color{green}{14w}-\color{orange}{9z})\]