Question

solve this

(t-4)(t+4)​

Answer 1

$\tt \huge \underline \bold{Solution }:$

$\sf \rightarrow (t - 4)(t + 4)$

$\sf \rightarrow t(t + 4) - 4(t + 4)$

$\sf \rightarrow {t}^{2} + 4t - 4t - 16$

$\sf + 4t \: and \: - 4t \: will \: cut.$

$\sf \therefore {t}^{2} - 16$

$\sf \therefore t = \sqrt{16}$

$\sf \therefore \red{ t = 4}$

Answer 2

Solution

:

$\sf \rightarrow (t - 4)(t + 4)→(t−4)(t+4)$

$\sf \rightarrow t(t + 4) - 4(t + 4)→t(t+4)−4(t+4)$

$\sf \rightarrow {t}^{2} + 4t - 4t - 16→t 2+4t−4t−16$

$\sf + 4t \: and \: - 4t \: will \: cut</p><p></p><p>\sf \therefore {t}^{2} - 16∴t2−16$

$\sf \therefore t = \sqrt{16}∴t=16$

$\sf \therefore \pink{ t = 4}∴$