题目内容：
8.设α，β，γ2 γ3 γ4均为四维列向量 ，A=（α，β，γ2 γ3 γ4）和B=（α，β，γ2 γ3 γ4）为四阶方阵，若行列式|A|=4,|B|=1,求行列式|A+B|的值
参考答案：
选择题：8.设α，β，γ2 γ3 γ4均为四维列向量 ，A=（α，β，γ2 γ3 γ4）和B=（α，β，γ2
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