JEE Advanced | 2015Math miscellaneousHard
Question
Which of the following values of α satisfy the equation
?
?Options
A.−4
B.9
C.−9
D.4
Solution
= - 648α
= - 648α-8α3 = - 648α
⇒ α3 = 81α
∴ α = 0,9, -9
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