Question

How do you evaluate `\sqrt{4(2)^{2}-3}-2(2)`?

Answer 1

`sqrt(13)-4`

Explanation:

`sqrt[4(2)^2-3]-2(2)`

`=sqrt[4(4)-3]-4`

`=sqrt[16-3]-4`

`=sqrt(13)-4`

Note: `=-0.394` (corr. to 3 sig fig)