Question

If x/y+y/x = - 1 (x, y≠0) the value of x³-y³ is
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Answer 1

Explanation:

if yx+xy=−1

simplifies to x2+xy+y2=0

as (x3−y3)=(x−y)(x2+xy+y2)=0   using above result

Answer 2

Answer:

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