Question

x²+1/x²=7
then what will be
x³+1/x³=?​

Answer 1

QUESTION : x²+1/x²=7

then what will be

x³+1/x³=?

WHAT TO FIND : THE VALUE OF x³+1/x³

SOLUTION : x³+1/x³ = (x+1/x) (x²+1/x²)

= 9 × 7

= 63

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