Question 258349


(2 x)/(x+3) + (-4)/x 
 | = | (2 x x)/((x+3) x) + (-4 (3+x))/(x (3+x)) | (make common denominator)
 | = | (2 x^2)/(3 x+x^2) + (-12-4 x)/(3 x+x^2) | (multiply)
 | = | (2 x^2 + -12-4 x)/(3 x+x^2) | (collect terms)
 | = | (-12-4 x+2 x^2)/(3 x+x^2) | (add)

which is equivalent to 

C.2x^2-4x-12/x^2+3x