Question

expand the formula
$(k - 8) {}^{2} =$
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Answer 1

Answer:

this is in the form (a-b)²

(a-b)² = a² + b² - 2ab

(k-8)² = k² + 8² - 2(k)(8)

= k² + 64 - 16k

= k² - 16k + 64

Answer 2

$\red{ \boxed{ {(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2} }}$

$\implies {(k - 8)}^{2} = {k}^{2} - 2(k)(8) + {8}^{2}$

$\orange{\therefore {(k - 8)}^{2} = {k}^{2} - 16k + 64}$

HOPE IT HELPS!!