Question

find factors of (9x)^2-16​

Answer 1

Answer:

hope it helps.........

Answer 2

$\sf \large\underline{ \underline{Solution : \: \: }}$

$\hookrightarrow \sf {(9x)}^{2} - 16 \\ \\ \hookrightarrow \sf {(9x)}^{2} - {(4)}^{2} \\ \\ \hookrightarrow \sf </p><p>(9x - 4) (9x + 4) \: \: \: \: \bigg \{ \because{a}^{2} - {b}^{2} = (a - b)(a + b) \bigg\}\\ \\ \hookrightarrow \sf (9x - 4) = 0 \: \: or \: \: (9x + 4) = 0 \\ \\ \hookrightarrow \sf x = \frac{4}{9} \: \: or \: \: x = - \frac{4}{9}$