Question

Find
$(a + 8) {}^{2}$


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Answer 1

AnsweR :

$\sf \: {a}^{2} + 16a + 64$

SolutioN :

$\sf \: {(a + 8)}^{2}$

$\sf \bold \pink{[Using \: Identity] : {(a + b)}^{2} = {a}^{2} + 2ab + {b}^{2}}$

$\sf {(a + 8)}^{2} = {(a)}^{2} + 2 \times a \times 8 + {(8)}^{2} \\ \\ \sf = {a}^{2} + 16a + 64$

Answer 2

(a+b)^2 = a^2 + b^2 + 2ab
(a+8)^2 = a^2 + (8)^2 + 2(a)(8)
= a^2 + 64 + 16a