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Video: Simplifying Roots of Negative Numbers

Bethani Gasparine

Find the value of −√−144.


Video Transcript

Find the value of negative square root negative 144.

We can rewrite this because the inside of the square root negative 144 can be rewritten as negative one times 144. Using this multiplication property, now we can break it up.

First, we can bring over the negative sign. And the square of negative one is equal to 𝑖, that’s imaginary number. And the square root of 144 is 12. So to rewrite this, we get negative 12𝑖.