Find the sum. Express your answer in simplest form. 4x+6/y^2-9 + 8x-7/y^2-9

2 answers:

7 0

It looks like you already have a common denominator (y^2-9). So, you can just add the two numerators and put that over the common denominator. Hope this helps!

nadya68 [22]3 years ago

4 0

2(2x+3) 8x-7
----------- + --------
(y-3)(y+3) (y-3)(y+3)

=2(2x+3)+8x-7
-------------------
(y-3)(y+3)

= 12x-1
-------------
(y-3)(y+3)

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