plss solve the above que.
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Answer:
234
Step-by-step explanation:
x^2 + 1/x^2 = 38
We can write the same equation as,
=> x^2 + 1/x^2 = 36 + 2
=> x^2 + 1/x^2 - 2 = 36
=> (x - 1/x)^2 = 36
=> (x - 1/x) = 6
We have to find x^3 - 1/x^3 value.
=> x^3 - 1/x^3
=> (x - 1/x)^3 + 3 * x * 1/x(x - 1/x)
=> (6)^3 + 3(x - 1/x)
=> 216 + 3(6)
=> 234
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