【評論主題】9.若0為x的一元次方程式2x2-5x=a2+2a-3的一根,則a=_______
【評論內容】
就是這樣啊428571-->6個一循環故 小數第N位的值, 就是除以6的餘數N除以6, 餘數=1時 ==> 4
N除以6, 餘數=2時 ==> 2
N除以6, 餘數=3時 ==> 8N除以6, 餘數=4時 ==> 5N除以6, 餘數=5時 ==> 7N除以6, 餘數=0時 ==> 1本題餘數=0 , 所以答案為1
【評論主題】【題組】3. Fresh air and clean water are very i t to our health. They both are the keys to ahea
【評論內容】選項(D)誤打為(C)