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Originally Posted by angelamonique evaluate sqrt(-3)*sqrt(-12) In many modern treatments, we agree that in not defined.
However we can enlarge the number system by one symbol. We say that is a solution for .
In effect we now have . Now we can say .
So now your question becomes
Last edited by Plato; June 25th 2013 at 11:19 AM.
is it 15i^2 ?
So now your question becomes wait, i get the i-part but i don't see how you got 24. isn't sqrt(3)*sqrt(12) = sqrt(3*12) ?
Aside from the arithmetic mistake, Plato was correct. Express the radicals in terms of i and simplify. Recall that
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