\({x^{6n+7} + x^{4n-3} + x^{5n+2}\over x^{2n-2}}\)
I got \({x^{9n+12}}\) as an answer. am i correct?
No, that is not right!. You can only add exponents if they are multiplied together. But you have + signs on top. The right answer is: x^(2 n - 1) + x^(3 n + 4) + x^(4 n + 9). That is it. You can't do much else with it.