Question

2. x2 - 16 = 0 Factorisation
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Answer 1

Explanation:

$x {}^{2} - 16 = 0 \\ x {}^{2} - (4) {}^{2} = 0 \\ (x - 4) \: (x + 4) = 0 \\ x - 4 = 0 \\ \\ x = 4 \\ or \\ x + 4 = 0 \\ x = - 4$

hope it helps..

Answer 2

Answer:

Answer is 4 or - 4

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