Question

plz answer me that queation​

Answer 1

${x}^{2} + \frac{1}{ {x}^{2} } = 34 \\ {(x + \frac{1}{x}) }^{2} - 2.x. \frac{1}{x} = 34 \\ {(x + \frac{1}{x} )}^{2} = 34 + 2 \\ {( x + \frac{1}{x}) }^{2} = 36 \\ x + \frac{1}{x} = 6 \\ ATQ \\ {x}^{3} + \frac{1}{ {x}^{3} } \\ {(x + \frac{1}{x}) }^{3} - 3x. \frac{1}{x} (x + \frac{1}{x} ) \\ {(6)}^{3} - 3.6 \\ 216 - 18 \\ 198$