Find the sum and express in simplest form. Show all work:
x^2 2x-15
----- *------
x^2-9 x^2-9
*I don't get this at alll.Plz help me.

I assume you are trying to add, since the problem says "find the sum" and express in simplest form.

x^2/(x^2-9) + (2x-15)/(x^2-9)

You have a common denominator (x^2-9), so you can just add the numerators (top numbers) together.

Here's how it works out:

(x^2 + 2x - 15)/(x^2-9)

Can we simplify this further? Yes!

Let's factor both the numerator and denominator first:

(x + 5)(x - 3)/(x + 3)(x - 3)

You have a common factor in both the numerator and denominator. Cancel out that common factor to simplify.

That should be all you need to do!

so then will it turn out to be:
(x+5)/(x+3)

Correct!

1. 👍 0
2. 👎 0
3. 👁 95

Similar Questions

1. Algebra

asked by Helpless in Math on May 27, 2007
2. MATH Dx

17/51 simplest form 19/38 simplest form 10/32 simplest form show work pweeeese T3T

asked by katherine on August 31, 2009
3. algebra question

Find the sum and express in simplest form. (x^2)/(x^2-9)+(2x-15)/(x^2-9) combine the numberator terms: x^2 + 2x -15 which is factorable (x+5)(x-3) Factor the denominator (x+3)(x-3) simplify.

asked by mike on May 21, 2007
4. algebra 2

Express the sum in the simplest form. 3x/x+5 + 7/x+5

asked by jim on February 24, 2013
5. Math

Add express each sum in simplest form 1 1/4 + 2 2/5

asked by Niyah on November 9, 2017
6. math

How do you express the sum in simplest form for 1/10plus1/5

asked by sanaa on January 8, 2015
7. math

express the sum of difference in simplest form 1-1/6-11/18=

asked by andrea on October 29, 2012
8. Math

asked by Anonymous on November 30, 2015
9. algebra 2

Would some one look at these problems and see if I got them right Thanks Just let me if they are wrong so I can go back over them 1.Write in simplest form 48/56 A. 6/7 2.Multiply 8x^3/5 *10/x^3 A. 16/x^4 3.Divide 4/x^7 / 12/x^3 A.

asked by CINDY on June 1, 2007
10. Math

Add or subtract, then express the sum of difference in simplest form. 5/4+1/2

asked by Kenneth duclan on June 8, 2017

More Similar Questions