SOLUTION: can i get help adding and subtracting 2x^2+3x over x^2-2x-63 plus 7-x over x^2-2x-63 minus x^2-3x+21 over x^2-2x-63 =

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Question 76390: can i get help adding and subtracting
2x^2+3x
over
x^2-2x-63
plus
7-x
over
x^2-2x-63
minus
x^2-3x+21
over
x^2-2x-63
=
Answer by chitra(359) (Show Source):
You can put this solution on YOUR website!
The given expression is:

Since the denominators is the same for all the 3 expressions, the LCM will be the smae. That is

Hence, the given expression can be written as:

This can be written as:

Simplifying this further, we get:

Here, both the numerator and the denominator can be factored and can be written as:

This can be written as:

Here we observe that (x + 7) is present both in the numerator and the denominator.

Hence, we remain with

Thus, the solution.