## anonymous one year ago How do I solve 2-√10/2 to get -.58

1. Astrophysics

$2- \frac{ \sqrt{10} }{ 2 }$ like this?

2. Astrophysics

Or $2- \sqrt{\frac{ 10 }{ 2 }}$

3. anonymous

The first one

4. anonymous

Are you sure? I'm thinking $\frac{ 2-\sqrt{10} }{ 2}$ (parentheses will make your life so much easier)

5. Astrophysics

Ah right, it's always hard to tell what the expression is so please @cdelarosa1031 put parentheses on your questions or upload an image. So is it what Peachpi said or one of the ones I mentioned above?

6. anonymous

It's not giving me parentheses. It's just like that and want to know how they got -.58

7. anonymous

Astrophysics, the first one

8. Astrophysics

No...we mean put parentheses in your problem so we know what the question is, is the whole thing being divided by 2 (2-sqrt(10))/2 or just the sqrt(10)

9. Astrophysics

Ok cool

10. Astrophysics

$2- \frac{ \sqrt{10} }{ 2 } = \frac{ 2 }{ 1 } - \frac{ \sqrt{10} }{ 2 }$ we can deal with the sqrt(10) after I guess, so do you know how to subtract fractions?

11. anonymous

I haven't done that in a while :/

12. UsukiDoll

@peachpi 's version takes me to -.58

13. Astrophysics

Yeah I think it is @peachpi version because 1 gives u 0.42

14. anonymous

How are you getting the decimal answers?

15. UsukiDoll

$\frac{ 2-\sqrt{10} }{ 2} \rightarrow \frac{2-3.16}{2} \rightarrow \frac{-1.16}{2} \rightarrow -0.58$

16. anonymous

I was skipping a step :/

17. anonymous

Thank you so much :)

18. Astrophysics

19. anonymous

20. anonymous

1+3/y/5/y

21. anonymous

Not sure how to upload image to show proper way on paper