辽宁省高考数学试卷真题

2^10s30-(2^10+1)s30+s10=0 = = >s30 = s 10 = = & gt；a 11+0...+a30 = 0 == >A11 (1+Q+...+Q 19) = 0显然Q不等于0或1，所以:1+Q+...+Q 19 = 0。Q 20 = 1(两边同时乘以q-1)= = & gt；q的值，你自己去验证吧。