Question

What’s 3√18?

Answer 1

Exact : 9`sqrt(2)` Rounded:~12.728

Explanation:

You can divide `sqrt(18)` into `sqrt(2*9)`, then simplify that to `sqrt(2*3^2)`. Because these 2 terms are multiplicative, the `3^2` can be removed from the square root. The next result would be 3`sqrt(2)`. Multiply by the previous coefficient term to get 9`sqrt(2)`. Unfortunately, `sqrt(2)` is irrational so it has no direct decimal conversion, so it must be rounded.

Answer 2

`9sqrt(2 )`

Explanation:

First, let's figure out how to simplify what's inside.

`sqrt(18)` is the same as `sqrt(3 xx 3 xx 2)`

Circle the pairs. Here you can see their's only one pair and that is of `3`. Everything else remains inside. Multiply `3` by the `3` on the outside and that will get you

`9sqrt(2)`