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如果(2x-y)+(x+3)i=0(x,y∈R)则x+y的值是                     (  ...
问题详情:如果(2x-y)+(x+3)i=0(x,y∈R)则x+y的值是                     (   )【回答】D知识点:数系的扩充与复数的引入题型:选择题...
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