Answer
8 (a). $ (1 - y) (1 + y)$
8 (b). $ (1 - \sin\theta) (1 + \sin\theta)$
Work Step by Step
8 (a). Given expression is-
$ 1 - y^{2}$
= $ 1^{2} - y^{2}$
= $ (1 - y) (1 + y)$
{Recall $a^{2} - b^{2}$ = (a-b)(a+b)}
8 (b).
Given expression is-
$ 1 - \sin^{2}\theta$
= $ 1^{2} - \sin^{2}\theta$
= $ (1 - \sin\theta) (1 + \sin\theta)$
{Recall $a^{2} - b^{2}$ = (a-b)(a+b)}
