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ZX-06544D9D13Equivalent expressions · 第 12 题
Equivalent expressions · 原库模块 1 · Q12 原库参考解析
The expression 4x2 + bx - 45, where b is a constant, can be rewritten as (hx + k )(x + j ), where h, k, and j are integer constants. Which of the following must be an integer?
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