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`        chapter complex numberif x-iy=(a-ib)1/2/(c-id)1/2, then prove that (x2+y2)2 = (a2+b2)/(c2+d2)`
10 months ago

```							Dear student  conjugate: x+iy = sqrt(a+ib)/(c+id) Now multiply both complex number x^2 + y^2 = sqrt (a^2 +b^2) /sqrt (c^2 + d^2) hence(x^2 + y^2)^2 = (a^2 +b^2)/ (c^2 + d^2)
```
10 months ago
```							Dear student (x+iy ) (x-iy) expand using (a+b)(a-b) formula. => (x^2 + y^2)x-iy=(a-ib)1/2/(c-id)1/2 (Given ) …...1 Then x+iy=(a+ib)1/2/(c+id)1/2..................2Multiply 1 and 2 we will get x2 + y2 = (a2+b2)/(c2+d2)Hope this helps Good luck
```
10 months ago
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