## anonymous 3 years ago pmsqrt54

1. anonymous

what do you want to do ......?

2. anonymous

$\pm \sqrt{54}$

3. anonymous

it says to simplify

4. anonymous

idk how

5. amistre64

what are the prime factor of 54?

6. amistre64

or rather, the perfect square factors, but primes is a good start

7. amistre64

54 = 2.28 54 = 2.2.14 54 = 2.2.2.7 sqrt(54) = sqrt(2.2.2.7) = sqrt(4.14) = sqrt(4) sqrt(14)

8. amistre64

2.28 = 56 tho doesnt it ... :/

9. anonymous

@amistre64 or @phi, would you mind helping me solve my question afterwards? http://openstudy.com/study#/updates/500186ede4b0848ddd65fc57

10. phi

amistre is setting off on the wrong foot.

11. amistre64

54 = 2.27 54 = 2.3.9 54 = 6.9 sqrt(54) = sqrt(6.9) = sqrt(6) sqrt(9)

12. amistre64

i got to left feet :)

13. anonymous

im srry i dont understand

14. amistre64

youll have to be more specific about what it is that youdont understand then

15. anonymous

where did the decimals come from

16. amistre64

my keyboard :/ its a lazy multiplication sign. its easier for me to hit "." than it is to hit "shift+8" every time

17. anonymous

what do i do with the plus minus sign is this does my answer turn into this $-3\sqrt{6}$ and $3\sqrt{6}$

18. amistre64

thats correct, the +- means there are 2 results; a positive and a negative

19. anonymous

oh ok then the answer i wrote above is correct

20. jiteshmeghwal9

the answer u gt will come both in plus & minus

21. anonymous

ok then thank you very much

22. amistre64

yw, and good luck :)