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2023年12月C卷 · 第 15 题

2023年12月C卷 · 原库模块 2 · Q15 原库参考解析

The quadratic function f has a factor of ( x +7.75) and a zero x  = c, where c is a positive constant. The graph of y = f(x) in the xy-plane has its vertex at(-3.75,-d), where d is a positive constant. What is the value of c?
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