SOLUTION: (3+10i)^2

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Question 613018: (3+10i)^2
Answer by ReadingBoosters(3246) About Me  (Show Source):
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(3+10i)(3+10i)
9+%2B+30i+%2B+30i+%2B+100i%5E2
...
highlight_green%28100i%5E2+%2B+60i+%2B+9%29
...
If i is the complex number for sqrt%28-1%29,
%28100%29sqrt%28-1%29sqrt%28-1%29+%2B+60i+%2B+9
100(-1) + 60i + 9
60i - 91
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