to find value of x and discontinous 9x²-3x-2/3x²+13x-4

Answer 1

3x^2+13x-4 = 0 when x = -1/6 (13±√217)
9x^2-3x-2 = (3x-2)(3x+1)

so, f(x) is discontinuous at x = -1/6 (13±√217) where the denominator is zero.