partial fraction
posted by kingwendu .
if f(x) ax^2+bx+c , g(x) :1/3x^2+2 and fg(x)= 18x^4+24x^2+11/(3x^2+2)^"

FIND A, B AND C

The expression ends with (3x^2 + 2)^ and lacks an exponent. Maybe ^" is some special notation?
I assume you mean g(x) = 1/(3x^2 + 2)
and fg(x) means f(x)*g(x) and not f(g(x))
As usual, a little ambiguity delays responses.