## anonymous 3 years ago someone please help me!! Find the GCF of the monomials: 18x2, 30x2y, and 54y 18 6 18xy 6xy

1. anonymous

well it cant have an x or y because not all of them have x and y so now you just have to figure out the greatest number that goes into all 3 of the numbers

2. anonymous

i mean i just dont understand itwhat it wants me to do?

3. anonymous

find the biggest number that goes into all 3 of the numbers

4. anonymous

80,30, ande 54?

5. anonymous

yes

6. anonymous

2

7. anonymous

sorry it is 18* 30 and 54 and look at your answer choices. then try it

8. anonymous

how do i find the biuggest number that goe sinto all of them?

9. anonymous

take each number and divide it by 6, then if all of that works, try 18

10. anonymous

$18=2\times 3^2, 30=2\times 3\times 5,54=2\times 3^3$ greatest common factor is $2\times 3=6$

11. anonymous

or you could do it that way...

12. anonymous

i got 18= 2,3,6,9 30= 2,3,5,6,10 54= 2,27 so is it 2?

13. anonymous

@satellite73 is right. for 54 you didnt get all of the factors

14. anonymous

i made a mistake the gfc is 6 right?

15. anonymous

yes

16. anonymous

17. anonymous

yesh

18. anonymous

thanks!