Question

Does anyone know where the a in front of the parentheses for the LCD : a(a+5)(a-6) came from?

Thank you!

Answer 1

See below

Explanation:

If you factor
`a^2-a-30` you get
`\left(a^2+5a\right)+\left(-6a-30\right)`

=
`a(a+5)-6(a+5)`

=
`a(a+5)(a-6)`

That's where the a comes in

Not sure if that answers your question