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If (1+i)(1+2i)(1+3i)......(1+n i)=(x+i y...

If `(1+i)(1+2i)(1+3i)......(1+n i)=(x+i y)` , show that `2. 5. 10...... (1+n^2)=x^2+y^2dot`

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CENGAGE PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  3. If (1+i)(1+2i)(1+3i)......(1+n i)=(x+i y) , show that 2. 5. 10...... (...

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