①已知集合A={x|ax+1=0},且1∈A,则实数a的值为?②已知i为虚数单位,若复数z1=1-i,z2=2+i,则z1×z2=?③已知向量p=(2,-3),q=(x,6),且p∥q,则|p+q|的值为?④各项都为正数的等比数列{an}中,a1=2,a6=a1a2a3,则公比q的
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![①已知集合A={x|ax+1=0},且1∈A,则实数a的值为?②已知i为虚数单位,若复数z1=1-i,z2=2+i,则z1×z2=?③已知向量p=(2,-3),q=(x,6),且p∥q,则|p+q|的值为?④各项都为正数的等比数列{an}中,a1=2,a6=a1a2a3,则公比q的](/uploads/image/z/7657651-19-1.jpg?t=%E2%91%A0%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%7Bx%7Cax%2B1%3D0%7D%2C%E4%B8%941%E2%88%88A%2C%E5%88%99%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%80%BC%E4%B8%BA%3F%E2%91%A1%E5%B7%B2%E7%9F%A5i%E4%B8%BA%E8%99%9A%E6%95%B0%E5%8D%95%E4%BD%8D%2C%E8%8B%A5%E5%A4%8D%E6%95%B0z1%3D1-i%2Cz2%3D2%2Bi%2C%E5%88%99z1%C3%97z2%3D%3F%E2%91%A2%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8Fp%3D%282%2C-3%29%2Cq%3D%28x%2C6%29%2C%E4%B8%94p%E2%88%A5q%2C%E5%88%99%7Cp%2Bq%7C%E7%9A%84%E5%80%BC%E4%B8%BA%3F%E2%91%A3%E5%90%84%E9%A1%B9%E9%83%BD%E4%B8%BA%E6%AD%A3%E6%95%B0%E7%9A%84%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%7Ban%7D%E4%B8%AD%2Ca1%3D2%2Ca6%3Da1a2a3%2C%E5%88%99%E5%85%AC%E6%AF%94q%E7%9A%84)
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