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If a/b + b/a - 1 = 0 then the value of a...

If `a/b + b/a - 1 = 0` then the value of `a^3 + b^3` is.

यदि `a/b + b/a - 1 = 0` हो, तो `a^3 + b^3` का मान है

A

`-1`

B

`3`

C

`0`

D

`1`

Text Solution

Verified by Experts

The correct Answer is:
C
`a/b + b/a - 1 = 0`
`implies (a^2 + b^2 -ab)/(ab) = 0`
`implies a^2 + b^2 - ab = 0 " " ....(i)`
`because a^3 + b^3 =(a + b) xx 0 ` (समी. (i) से)
`implies a^3 + b^3 = 0`
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