Question 1141275
Just as you would do with any fractions you want to add.
Form each into equivalent for the (lowest) common denominator, do the adding and then simplify.


(x+2)/(x^2+3x+2) + (3)/(x^2-4) 


{{{(x+2)/(x^2+3x+2) + (3)/(x^2-4)}}}

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{{{(x+2)/((x+1)(x+2))+3/((x-2)(x+2))}}}


Can you continue from that or still need more?