Question

$81 - (x - 7) {}^{2}$

Answer 1

THANKS FOR THE QUESTION
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81-(x-7)²

FACTORISING.

using identity a² - b²=(a-b)(a+b)

9²-(x-7)²

=(9+x-7)(9+7-x)
=(2+x)(16-x)

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Answer 2

$\huge\red{ H^EY_A !! }$

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$\huge\text{The solution is }$

$\huge\text{in the attachment.}$

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$\huge\red{T^HAN_KS....}$