## anonymous one year ago how does finding square roots work???

1. anonymous

like improper square roots.

2. anonymous

$\sqrt{7}+\sqrt{40}$

3. Nnesha

you need to factor 40

4. anonymous

|dw:1433116028145:dw|

5. anonymous

done

6. anonymous

|dw:1433116056302:dw|

7. Nnesha

yeah but remember 40 is under square root so one of factor must be perfect square root

8. anonymous

done and done.

9. Nnesha

yep that's right

10. Nnesha

$\sqrt{7}+2\sqrt{10}$ that's it both root are not same so you can't do anything else

11. anonymous

hm i had the wrong question then.

12. anonymous

how do i find a imperfect square root? like is the only way to do it manually?

13. anonymous

@nnesha

14. anonymous

like 2.6 * 2.6 = 6.76

15. anonymous

2.61 * 2.61 = 6.8121

16. anonymous

is that the only way to find out?

17. Nnesha

first step is to factor that number (one of number should be perfect square root )

18. anonymous

just keep upping the numbers until i find 7?

19. Nnesha

ii don't understand that decimal question

20. anonymous

$\sqrt{7}$

21. anonymous

say i want to figure the answer out to this, how would i do it? Is the only way to figure this out is by doing it manually?

22. anonymous

there are no perfect squares in this.

23. Nnesha

well that's going to be a decimal answer bec factor of 7 is just one 1 and 7

24. Nnesha

yes right

25. anonymous

so then you're telling me the only way to figure out the answer is by doing the question manually?

26. anonymous

2.6457513 * 2.6457513 = 7

27. Nnesha

square root of 7 is an irrational number you have to use a calculator for that .-.

28. Nnesha

7 is a prime number and square root of 7 would be loooooon number

29. anonymous

or do it manually, but that takes ages. ahh i see... i knew it ! okay thank you, that's what i was asking initially.

30. Nnesha

yeee .-... use any calculator ti 84 or 83 or simple cal or google calc don't even try to use *human calculator* :P

31. anonymous

LOL!

32. Nnesha

;P