Question

In the following exercises, simplify. a) $-\sqrt{225}$ (b) $\sqrt{-9}$

   In the following exercises, simplify.
a) $-\sqrt{225}$ (b) $\sqrt{-9}$
Intermediate Algebra
Intermediate Algebra
Lynn Marecek 1st Edition
Chapter 8, Problem 9 ↓
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In the following exercises, simplify. a) $-\sqrt{225}$ (b) $\sqrt{-9}$
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Transcript

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0:00 Hello.
00:01 So for part a, we're looking to evaluate negative the square root of 225, while square to 225 is 15, and the negative sign out front makes it negative.
00:12 So this is going to be equal to negative, negative 15.
00:16 But for b, we want to evaluate the square root of a negative number...
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