Question

factor: x^2+144

Answer 1

\[x^2+144=x^2-\left( -144 \right)=x^2-\left( 144*-1 \right)=x^2-(144*\iota^2)\]
\[=x^2-\left( 12 \iota \right)^2=?\]
\[\left[ a^2-b^2=\left( a+b \right)\left( a-b \right) \right]\]