a1a2a3a4=121 而且是互不相等的整数则a1a2a3a4为-11,-1,1,11四个整数,因为a1>a2>a3>a4,则a1=-11,a2=-1,a3=1,a4=11.把a1=-11,a2=-1,a3=1,a4=11代入(a1a3)÷(a2a4)的(a1-a4)次方=(-11)÷(-11的(a1-a4)次方=1的(a1-a4)次方=1
若a1、a2、a3、a4是互不相等的整数,a1>a2>a3>a4,且a1a2a3a4=121,则(a1a3)÷(a2a4
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