Question

factorise completely x4-16​

Answer 1

$\huge\underline\mathfrak\purple{Answer}$

${x}^{4} - 16. \\ \\ {x}^{4} = 16. \\ \\ x = \sqrt{16} \\ \\ x = ±4 \\ \\ or \: x = 4 \: \: \: \: \: \: and \: \: x = - 4$

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Answer 2

Here is your answer user.