## anonymous one year ago What is the solution to the equation? 2 x squared plus 4 equals 20 Choose all answers that are correct. A. − 2 square root of 2 B. − 2 square root of 8 C. 2 square root of 2 D. 2 square root of 8

1. anonymous

@egbeach

2. egbeach

$2x ^{2} +4=20$

3. anonymous

yup

4. egbeach

move the 4 to the other side

5. anonymous

so 2x^2=20-4

6. anonymous

2x^2=16

7. egbeach

how would you get ride of the 2?

8. anonymous

divide both sides

9. egbeach

so do that...

10. anonymous

x^2=8

11. egbeach

and whats the square root of 8?

12. egbeach

$2\sqrt{2}$

13. anonymous

yes

14. anonymous

it says choose all answers that are correct

15. anonymous

so that's one

16. anonymous

@egbeach

17. egbeach

when you square something what do you always end up with?

18. anonymous

umm..

19. anonymous

so A?

20. anonymous

@egbeach

21. egbeach

should be

22. anonymous

okay

23. anonymous

Thanks! :)