Question

find LCM 35b^6a^4,5b^8a^5,21b^2a^8

Can anyone help me with this please?

Answer 1

35b^6a^4 = 5*7*bbbbbbaaaa

5b^8a^5 = 5*bbbbbbbbaaaaa
21b^2a^8 = 3*7*bbaaaaaaaa

now we need a number which contains all of those

I see 3*5*7*aaaaaaaabbbbbbbb
= 105a^8b^8