Question

if x³+1/x³=2 then x+1/x=​

Answer 1

Answer:

$\frac{ {x}^{3} + 1 }{ {x}^{3} } = 2 \\ {x}^{3} + 1 = 2 {x}^{3} \\ 1 = 2 {x}^{3} - {x}^{3} \\ 1 = {x}^{3} \\ \sqrt[3]{1} = x \\1 = x \\ so \: we \: need \: to \: find \: value \: of \\ \frac{x + 1}{x} \\ we \: know \: x \: is \: 1 \\ \frac{1 + 1}{1} = \frac{2}{1} = 2$

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