Simplify dfrac19x+dfrac20x2\\dfrac{19}{x} + \\dfrac{20}{x^2}dfrac19x+dfrac20x2
dfrac19+20x+x2\\dfrac{19 + 20}{x + x^2}dfrac19+20x+x2
dfrac19xx2\\dfrac{19x}{x^2}dfrac19xx2
dfrac39x2\\dfrac{39}{x^2}dfrac39x2
dfrac19x+20x2\\dfrac{19x + 20}{x^2}dfrac19x+20x2