Question

What is the sum of √-2 and √-18?

Answer 1

its imposible if its square root its imposible to sum two negative roots

Explanation:

Answer 2

`4√(-2)`

Explanation:

We can write the expression
`√(-18)` in another form, by decomposing the number 18.

`√(-18)=√(9(-2))=\sqrt{(3^(2))( -2)} =3√(-2)`

Since the two terms have the same radicand, we can make the sum of the coefficients.

`√(-2)+3√(-2)=4√(-2)`

we can also express this number as

`4√(-2)=√(-32)=4√(2)i`