Hint
In this case, each component will be an algebraic expression involve $a$, $b$, $c$, $d$, $x$, and/or $y$. It might look more complicated, but the answer will still have two rows, one from multiplication with the first row of $A$ and the second from multiplication with the second row of $A$.
When entering answers online, you would enter x either for the vector $\vc{x}$ and its first component $x$, as you don't have a way of entering a bold face $\vc{x}$ or an $\vec{x}$ with an arrow (another way we can denote a vector). In this case, when you enter x, it will be interpreted as the component $x$.
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