Question

Tick (✓) the correct answer:
3 + 23y − 8y² = ?
(a) (1 − 8y)(3 + y)
(b) (1 + 8y)(3 − y)
(c) (1 − 8y)(y − 3)
(d) (8y − 1)(y + 3)

Answer 1

(b) (1 + 8y)(3 − y)

$$\begin{gathered} 3+23y-8y^2 \\ =3+24y-y-8y^2 \\ =3(1+8y)-y(1+8y) \\ =(3-y)(1+8y) \end{gathered}$$