Question

-18a^4,3a^5 find the GCF

Answer 1

i dont know whether to use 2,9 or 3,6. how do you know which numbers to use?

Answer 2

since the second term has only 3, your GCF coefficient will be 3. But, you also have a^4 and a^5 to deal with. So, the GCF is 3a^4

Answer 3

2,9,a,a,a,a
3,a,a,a,a
do i work it out like that or something?

Answer 4

3, a, a, a, a
a^4 is basically a * a * a * a

Answer 5

ok i see. i get confused on which numbers to use when i know there are more than 2 numbers that can equal one answer