Please help me with math
Let f be the function defined by f(x) = (cx-5x^2)/(2x^2+ax+b) where a, b, and c are constants. The graph has a vertical asymptote at x=1, and f has a removable discontinuity at x = -2.
[Unless otherwise specified, the domain of a function f is assumed to be the set of all real numbers x for which f(x) is a real number.]
(a) show that a=2 and b= -4
(b) find the value of c. justify your answer.
(c) to make f continuous at x = -2, f(-2) should be defined as what value? Justify your answer.
(d) Write an equation for the horizontal asymptote to the graph of f. Show the work that leads to your answer.
*any help is appreciated.