2025年6月国际A卷 · 第 21 题

The function f is defined by \( f(x)=4(x-3)(x^2-k) \), where \( k \) is a constant. In the xy-plane, the graph of \( y=f(x) \) passes through the point \( (-8,\ 0) \). What is the value of \( f(0) \)?