Question

Multiply. (x – 10)(x – 10)

Answer 1

since its the same it'd be a^2-b^2..im pretty sure

Answer 2

\[
\begin{align}

&&x&-10\\
&\times&x&-10\\
\hline \\
&&-10x &+ 100\\
&+&x^2-10x\\
\hline \\
&&x^2-20x&+100

\end{align}
\]Just like long multiplication of numbers. Alternatively, use the FOIL method (First, Inside, Outside, Last).