Question

Using complete sentences, explain how to completely factor 3x2 - 3x - 60

Answer 1

\(\large 3x^2 - 3x - 60\implies 3({\color{blue}{ x^2-x-20}})
\begin{array}{llll}
{\color{blue}{ x^2-x-20}}\\
\qquad \uparrow \qquad \uparrow \\
\quad 4-5 \quad 4\cdot -5
\end{array}\)