How do you simplify: the square root of -169?

1 Answer
MeneerNask
Aug 10, 2015

You may start by observing that 169=13^2

Explanation:

But this doesn't help much as square roots of negative numbers are not defined.
You may find a way out by saying:

sqrt(-169)=sqrt((-1)xx(169))=sqrt(-1)*sqrt(169)=sqrt(-1)*sqrt(13^2)=i*13=13i

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