From health tips to tech hacks, find it all on IDNLearn.com. Our experts are available to provide in-depth and trustworthy answers to any questions you may have.
Expand the binomial:
(√2/5 + 5/2 i )² = (√2/5)² + 2i (√2/5) (5/2) + (5/2 i )²
… = 2/25 + √2 i + 25/4 i ²
… = -617/100 + √2 i