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simplify the rational expression: 3/5n+3 + 3n/n+6


Sagot :

    3      +    3n    =      3(n + 6)        3n(5n + 3)    =  3n + 18 + 15n² + 9n =
5n + 3      n + 6    (5n + 3)(n + 6)    (5n + 3)(n + 6)           5n² + 33n + 18
15n² + 12n + 18 = 3n² + 4n + 1
5n² + 33n + 18      n² + 11n + 1