Question

If z = x - i y and $z^{\frac{1}{3}}$ = p + iq, then $\bigg \lgroup \frac{x}{p} + \frac{y}{q}\bigg \rgroup / (p^2 + q^2)$ is equal to
(a) –2
(b) –1
(c) 2
(d) 1

Answer 1

the answer is -2 for respiration