(本題滿分6分)解方程:
解:方程兩邊同乘以-2,得1-+2(-2)=1, ············································ 2分
即1-+2-4=1,···················································································· 4分
解得=4.···························································································· 5分
經(jīng)檢驗, =4是原方程的根.···································································· 6分
解析:略
科目:初中數(shù)學(xué) 來源:2011年初中畢業(yè)升學(xué)考試(湖北武漢卷)數(shù)學(xué) 題型:解答題
(本題滿分6分)解方程:x2+3x+1=0.
查看答案和解析>>
科目:初中數(shù)學(xué) 來源:2010年高級中等學(xué)校招生全國統(tǒng)一考試數(shù)學(xué)卷(江蘇鎮(zhèn)江) 題型:解答題
(本題滿分5分)
解方程:.
查看答案和解析>>
科目:初中數(shù)學(xué) 來源:2010年四川省成都市溫江區(qū)初三第一學(xué)期期末數(shù)學(xué)卷 題型:解答題
(本題滿分12分)
解方程:
(1)
(2)
查看答案和解析>>
湖北省互聯(lián)網(wǎng)違法和不良信息舉報平臺 | 網(wǎng)上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權(quán)舉報專區(qū)
違法和不良信息舉報電話:027-86699610 舉報郵箱:58377363@163.com