Wednesday

October 22, 2014

October 22, 2014

Posted by **bria** on Thursday, March 7, 2013 at 9:52am.

- math -
**Dr. Jane**, Thursday, March 7, 2013 at 10:15amDo you mean..

(2x^2 +7x+3)/(x^2 -2x -15)

You have to factor the numerator and the denominator and remove the common factors.

Can you factor these or do you need help?

- math -
**bria**, Thursday, March 7, 2013 at 10:25amneed help

- math -
**PsyDAG**, Thursday, March 7, 2013 at 11:05am[(2x+1)(x+3)]/[(x-5)(x+3)} = ?

- math -
**Dr. Jane**, Thursday, March 7, 2013 at 11:51amDo you understand how you actually factor?

There is the guess method where you

would begin with:

x^2 -2x-15

(x- ) (x + )

I know that I need x in the front because x times x = x^2

I know that I need a plus and minus sign because 15 is negative and I will need to mulitply a + and a - number to get -15

Next, I have to think of two numbers that multiply to equal 15 and add to be -2 for the -2x portion.

It gets more complicated with 2x^2.. but it works basically the same way by guessing.

**Answer this Question**

**Related Questions**

Math...For All Math Tutors - I would like to know how many of the people ...

math - all i can say is math stinx dont mess with math. without math, a lot of ...

math - I just do not understand how to figure this out. Find the number of ...

English Grammar - A: What time is your math/Math class? B: At eleven forty-five...

Math - Is IB Math Studies the same as Pre-Calculus? I heard that IB Math Studies...

3rd grade Math - Actual question on homework."EXPLAIN HOW YOU CAN BREAK APART ...

math math math math - a. what is the general term of the following series? 60/...

What Makes A Good Math Teacher? - I think a good math teacher is someone who can...

Math - All of my life I have gotten a C average in math. I have been trying to ...

English - Revise the folloing sentences to create parallel constructions. (...