## weekskeith15 Group Title WILL SOMEONE HELP ME one year ago one year ago

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1. owen97

with what

2. weekskeith15

3. weekskeith15

wat u mean

4. owen97

u i might be able to help u

5. weekskeith15

$-\sqrt{27}+3\sqrt{3}+2\sqrt{45}+3\sqrt{12}$

6. cammyabbo

all you can do here is simplify 3√12

7. weekskeith15

$2\sqrt{6}+3\sqrt{45}-2\sqrt{54}-3\sqrt{3}$

8. cammyabbo

3√12 is 3√4x3, the square root of 4 is 2 which pops out and u multiply the 3 by 2 to have 6√3

9. cammyabbo

you should have 9√3

10. weekskeith15

for the 2nd one or the 1st one

11. cammyabbo

ok, i thought this was one problem, so you want to simplify the first one right?

12. weekskeith15

yes

13. cammyabbo

−√27 + 3√3 + 2√45 +2√45 + 3√12 is where we start right

14. cammyabbo

crap i have 2squarerrot 45 twice

15. cammyabbo

take one out

16. cammyabbo

−√27 + 3√3 + 2√45 + 3√12

17. weekskeith15

yes that is right

18. cammyabbo

3√12 can become 3√(4)(3)

19. weekskeith15

how do u work it out

20. cammyabbo

since 2 is the SRoot of 4, it comes out to me multiplied by the 3 on the outside, leaving the 3 inside to become 6√3

21. cammyabbo

3(2)√3 which is 6√3, now you can add this to the other 3√3 in the problem

22. weekskeith15

add wat one and i think u so much for helpin me thanks

23. cammyabbo

−√27 + 3√3 +(6√3) + 2√45 you can only add radicals when they are the same inside

24. weekskeith15

25. cammyabbo

we can actually simplify the 2 sroot 45. Give me a few min to show you how. Come back in about 5 minutes and it will be done

26. weekskeith15

alright think u so much

27. cammyabbo

NP

28. cammyabbo