
Just follow step by step. Follow PEMDAS (Parentheses, Exponents. Multiply/Divide, Add/Subtract)
You multiply straight across, and one number is a fraction and the other is not.
Given the following functions below,

Factorising the denominators of both functions,
Factorising the denominator of f(x),

Factorising the denominator of g(x),

Multiplying both functions,
Maybe c or A not completely sure try looking for the one you think it is and try reading it again