if x^2+1/x^2=62 then find the value of x^3+1/x^3
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Answered by
2
Answer:
5
Step-by-step explanation:
x² + 1/x² = 14
(x + 1/x)² -2.x.1/x = 14
(x + 1/x )² -2 = 14
(x + 1/x )² = 16
take square root both sides
(x + 1/x) = 4
then,
x³ + 1/x³ = ( x + 1/x)³ - 3.x.1/x(x + 1/x)
= ( x +1/x)³ -3(x + 1/x)
= (4)³ -3(4)
= 64 - 12
= 5
shubhangiDimri:
??
the answer
x^2+1/x^2=64 (not 14)
Answered by
5
hey mate! correct ans is 488...
Hope it helps .
Hope it helps .
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