Question

What is the LCM of `b+7, (b-7)^2` and `b^2-49`?

Answer 1

LCM `=(b+7)(b-7)^2`

Explanation:

Factor each:
`(b+7)`
`(b-7)(b-7)`
`(b+7)(b-7)`

The LCM must include each of these

LCM`=(b+7)(b-7)(b-7)`
or LCM `=(b+7)(b-7)^2`