已知802=6812=6822=6724,則一元二次方程式 x2-8x-6545=0的兩根為何?(A)86或-78(B)78或-86 (C)85或-77 (D) 77或-85。

問題詳情

8.已知802=6812=6822=6724,則一元二次方程式 x2-8x-6545=0的兩根為何?
(A)86或-78
(B)78或-86
(C)85或-77
(D) 77或-85。

參考答案

無參考答案

內容推薦

已知x2+px+q=(x-m)(x-n)若p＞0，q＜0且|m|>|n|,下列敘述何者正確?(A)m>0，n＞0(B)m＞0，n＜0 (C)m＜0，n＞0(D)m<0,n<
有大小相同的球若干個,全部的球可以擺成一個正方形,全部的球也可以擺成一個正三角形,兩種擺法如圖。若擺成正三角形,每邊球的個數比擺成正方形時每邊球的個數多2個,則球共有多少個? (A)81 (B
如圖是小翰參加「超級金頭腦」遊戲初選的比賽過程,若猜出密碼即可取得進棚挑戰的資格，則根據如圖可知密碼為何? (A)7(B)9(C)11 (D)12。
下列 AstraZeneca 之 COVID-19 疫苗的敘述何者最不正確？(A)含有 SARS-CoV-2 病毒棘蛋白(S protein)之非複製型腺病毒載體之疫苗(B)2 ~8°C 冷藏儲存
While the instructor claimed his comments were __________ to a mild warning, his studentsrecogniz
Even though he was only a neophyte in the business, he effectively used ________ methods to______
The irate customer became ________, and then he __________ against the mechanic’s unfairpractices
Making a(n) ______ visit to his ________, the unknown thief sought reassurance that no one haddis
Almost lulled to sleep by the candidate’s ___________ speech, the audience seemed to fall into as
In a child’s early years, he is ____________, accepting instruction and quickly learning new skil
Since the terms of the proposed agreement between the vendors were __________, bothbusinessmen we
During the fearful storm, the people in its path __________ God for divine _________.(A) importun
Most people have _______. They are afraid of snakes.(A) arachnophobia (B) acrophobia (C) ophidio
Philosophers tell us that one’s lifetime is __________ when considered from the viewpoint of____
A refugee may be forced to __________ allegiance to his former country and ___________ all ofhis
My friend’s uncle is a member of Alcoholics Anonymous； his ___________ led to an____________ liv
___________ markets sell grains, other foods, and precious metals.(A) Currency (B) Bond (C) Comp
To change from a passive acceptance of fate to a dynamic involvement in public affairs requires
Because of his __________ record of lying to police, the suspect was regarded as a(n) _________c
【題組】While playing in the park one morning, a loud argument was gotten into by several of the chi
【題組】Despite living only to the age of forty, the music of John Coltrane, it inspired a generatio
【題組】VitaminD, which the body needs in order to absorb calcium, is produced when skin is exposed
【題組】Unlike coniferous trees, whose leaves are usually needlelike, the leaves of deciduous trees
【題組】Even when hearing it from the hotel balcony several floors above the street, the noise from
【題組】If the proposals approved by the city council at its most recent meeting come to fruition,se