Question

a
$x {}^{2} - 64$
ans

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Answer 1

Answer :

x² - 8²

$= (x+8) (x-8)$

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Answer 2

Step-by-step explanation:

${x}^{2} - 64 = 0 \\ \\ x = ±\sqrt[]{64} \\ \\ x = ±8$