If , then show that…

MATHEMATICS · Subjective · CBSE · Mathematics · Complex Numbers and Quadratic Equations · Complex Numbers and Quadratic Equations

Problem

10. If (x+iy)3=u+iv(x+i y)^{3}=u+i v, then show that ux+vy=4(x2−y2)\frac{u}{x}+\frac{v}{y}=4\left(x^{2}-y^{2}\right).

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