Question

How do you factor `3a^2-18a+27`?

Answer 1

`=3(a-3)(a-3)`

Explanation:

`3a^2-18a+27`
`=3(a^2-6a+9)`
`=3(a^2-2a(3)+3^2)`
`=3(a-3)^2`
`=3(a-3)(a-3)`