Question

which choices are equivalent to the expression below? check all that apply. rad -9 A.3i B.-3 C.irad-9 D.-rad9​

Answer 1

Given:

Consider the expression is:

`√(-9)`

To find:

The equivalent expression.

Solution:

We have,

`√(-9)`

It can be written as:

`√(-9)=√(-1* 9)`

`√(-9)=√(-1)* √(9)`

`√(-9)=i* 3`
`[\because √(-1)=i]`

`√(-9)=3i`

The expression
`3i` is equivalent to the given expression.

Therefore, the correct option is A.