Question

if x+1/x=5, find the value of x³+1/x³

NOTE:-) wrong answer will be reported

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Answer 1

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Answer 2

Answer:

Answer would be 65

Step-by-step explanation:

x+1/x=5

cross multiplying X with 5..ou get

x+1=5x

1=5x-x

..

4x=1

x=1/4

so substituting x=1/4 in x³+1/x³

the equation would be

(1/4)³+1/(1/4)³

=(1/64)+1

---------------

1/64

=1+64/64

---------------

1/64

=65/64

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1/64

cancelling out 64 in both numerator n denominator

you get 65

Hope it helped you