Algebra
posted by Sara .
(x)/(x3)4(2x5)/(x+2)
I posted something before this, so now this is how far I got.
The answer I know is (5x^217x9)/(x3)(x+2)
first I get
(x)(x+2)/(x3)(x+2) (4)(x3)(x+2)/(x3)(x+2)(2x5)(x3)/(x3)(x+2)
Then I get
x^2+2x4x^24x242x^211x+15 (for the top)
When I put everything together I get
(5x^2 13x 9)/ (x3)(x+2)
as you can see however I am having a problem with + and  because I get 13x instead of 17x so could you look at what I am doing wrong and explain it to me?
The top should be this:
x^2 + 2x  4x^2 + 4x + 24  2x^2 + 11x  15
Combining like terms:
5x^2 + 17x + 9
Factoring out the negative gives this:
(5x^2  17x  9)
This should help you see the answer given:
(5x^217x9)/(x3)(x+2)
I hope this helps. Watch those negative signs because they can be tricky on these types of problems!
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