Question

Find the factors.

(10) y² – 6y – 72

Answer 1

The factors of y² – 6y – 72 are:

$$\begin{gathered} y^2-6y-72 \\ =y^2-12y+6y-72 \\ =y\left(y-12\right)+6\left(y-12\right) \\ =\left(y-12\right)\left(y+6\right) \end{gathered}$$