Question

if (x+iy)^1/3 =a+ib x,y,ab set membership R show that x/a - y/b =-2(a​

Answer 1

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Answer 2

Answer:

x+iy=(a+ib)^3

x+iy=a^3-ib^3+3abi(a+ib)

x=a^3-3ab^2

y=-b^3+3a^2b

x/a+y/b=a^2-3b^2-b^2+3a^2

4a^2-4b^2

this is answer