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

Question

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

80,30, ande 54?

anonymous · Answer

yes

anonymous · Answer

2

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

or you could do it that way...

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

i made a mistake the gfc is 6 right?

anonymous · Answer

yes

anonymous · Answer

the answer is b?

anonymous · Answer

yesh

anonymous · Answer

thanks!