posted by .

y^3-13y^2+36y

Can someone please show me step by step that way I can understand. Thank you

first notice that you can factor out the y, leaving

y(y^2-13y+36)
Now you want two numbers that add to -13 and multiply to 36. Obviously they must both be negative. Easy factors of 36 are

1,36 2,18 3,12 4,9

It's clear that we want 4 and 9, so our polynomial is

y(y-4)(y-9)

This factoring by inspection is mainly a skill acquired by doing a lot of problems, so you get to recognize likely factors.

Thank you soo much.. I have a lot of trouble with factoring

## Similar Questions

1. ### Algebra

Can you give a step by step example of how to factor a perfect square trinomial?
2. ### Algebra (Does any one understand special factors)?

I do not understand special factors, the teacher on Friday tried to explain in to me in class but she went so fast, and every time we complain that we don't understand it she gets mad. So could someone please help me with at least …
3. ### Physics

I'm trying to rearange this 0 = Xo + 2^-1 a t^2 for t I've been told that it is (a^-1 2x)^(2^-1) but I do not see how please show me step by step how you get that 0 - Xo = Xo - Xo + 2^-1 a t^2 (-Xo = 2^-1 a t^2) a^-1 2 (a^-1 (2-Xo) …
4. ### math

I donot understand how to do this practice question for a test I have tomorrow. can someone please show me step by step?
5. ### Physics

Can someone please show me step by step how to normalize e^-5x in the interval (0, infinity)?
6. ### algebra2

Can you explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. Can there be more than one way to factor a problem like this?