Question 19If xy+yx=−1 (where x,y≠0 ),then the value x3−y3 isA) 1B) -1C) 0D) 12

Question 19If xy+yx=−1 (where x,y≠0 ),then the value x3−y3 isA)

1.	Question 19If xy+yx=−1 (where x,y≠0 ),then the value x3−y3 isA) 1B) -1C) 0D) 12
Answer» Question 19 If $\frac{x}{y} + \frac{y}{x} = - 1$ (where $x, y \neq 0$ ),then the value $x^{3} - y^{3}$ is A) 1 B) -1 C) 0 D) $\frac{1}{2}$