Question

which choices are equivalent to the expression below? check all that apply

sqrt(-9)

a. -3
b. 3i
c. i sqrt 9
d. - sqrt 8

Answer 1

The equivalent expression is 3i.

What is an expression?

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

How to determine?

As we know,

When there is a minus in square root

Here,  comes iota(i)

So,$\sqrt{-9}=3i.$

The equivalent expression is 3i.

Learn more about expressions:

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