Simplify dfrac9x+dfrac10x2\\dfrac{9}{x} + \\dfrac{10}{x^2}dfrac9x+dfrac10x2
dfrac9xx2\\dfrac{9x}{x^2}dfrac9xx2
dfrac19x2\\dfrac{19}{x^2}dfrac19x2
dfrac9x+10x2\\dfrac{9x + 10}{x^2}dfrac9x+10x2
dfrac9+10x+x2\\dfrac{9 + 10}{x + x^2}dfrac9+10x+x2