Question

Solve this equation: (x + 4) (x - 4) = 9

Answer 1

$x {}^{2} - 4 {}^{2} = 9 \\ x {}^{2} - 16 = 9 \\ x {}^{2} = 9 + 16 \\ x {}^{2} = 25 \\ x = \sqrt{25 } \\ x = 5$
HERE IS YOUR ANSWER

Answer 2

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