Factor completely what does that mean

25a2 - 30a + 9

3 answers

It means look for monomial factors that give 25a^2 - 30a + 9
when they are multiplied together.

(5y -3)*(5y -3) = (5y -3)^2 will work
(5a-3)(5a-3)

does this work?
Sorry, I substituted y for a.
Another senior moment