Question

factor 9a^3-15a^2+3ab-5b.
A) (3a-5)(3a^2-b)
B)(3a+5)(3a^2+b)
C)(3a+5)(3a^2-b)
D)(3a-5)(3a^2+b)

Answer 1

Factor the first two terms: 3a²(3a-5).
Factor the last two terms: b(3a-5).

You now have: 3a²(3a-5)+b(3a-5).
There are only two terms left.
If you factor out the common factor, you have the answer!

Answer 2

is the answer 3a-5 and 3a^2-b?

Answer 3

No, because 3a²(3a-5)+b(3a-5) = (3a²+b)(3a-5), I'd say it is 3a-5 and 3a²+b

Answer 4

o okay now i understand, thank you

Answer 5

You're welcome!