Question

If X + 1 by X equals to 3 then find the value of x cube + 1 by x cube

Answer 1

Answer:

$\frac{x + 1}{x } = 3 \\ 2x = 1 \\ x = \frac{1}{2 } \\ \frac{ {x}^{3 } + 1}{ {x}^{3} } = \frac{ {1}^{3} }{ {2}^{3} } + 1 \div \frac{1}{ {2}^{3} } \\ =9$