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QUESTION
Q
If a3 − b3 − c3 = 0 then the value of a9 − b9 − c9 − 3a3b3c3 is
Solution
We know that when A + B + C = 0 then A3 + B3 + C3 − 3ABC = 0
Let A = a3; B = −b3 ; C = −c3
Given a3 − b3 − c3 = 0
⇒ A +...
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A + B + C = 0 then A3 + B3 + C3 − 3ABC = 0
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