本课配套习题挑战模式1/5
单选题
难度系数:
1.下列方程是一元二次方程的是()
A: x2-1=y |
B:(x+2)(x+1)=x2 |
C: 6x2=5 |
D: x2= |
一次做对,真牛!
+5奖励规则>
- 提示1:IOiAg+Wvn+S4gOWFg+S6jOasoeaWueeoi+eahOWumuS5ie+8jOS4gOWFg+S6jOasoeaWueeoi+aMh+eahOaYr++8muWPquWQq+acieS4gOS4quacquefpeaVsO+8jOacquefpeaVsOeahOacgOmrmOasoeaVsOaYrzLnmoTmlbTlvI/mlrnnqIs=
- 提示2:IOagueaNrui/meS4quWumuS5ie+8jOWvueS4iui/sOWbm+S4qumAiemhueWPmOW9ouS5i+WQjui/m+ihjOiuqOiuuuWNs+WPrw==
- 答案:Qw==
PGRpdj7op6PvvJpB44CB5piv5LqM5YWD5LqM5qyh5pa556iL77yM5pWF5pys6YCJ6aG56ZSZ6K+v77ybPGJyPkLjgIHljp/mlrnnqIvlj6/ljJbkuLrvvJozeCsyPTDmmK/kuIDlhYPkuIDmrKHmlrnnqIvvvIzmlYXmnKzpgInpobnplJnor6/vvJs8YnI+Q+OAgeespuWQiOS4gOWFg+S6jOasoeaWueeoi+eahOWumuS5ie+8jOaVheacrOmAiemhueato+ehru+8mzxicj5E44CB5piv5YiG5byP5pa556iL77yM5pWF5pys6YCJ6aG56ZSZ6K+vLiA8YnI+5pWF6YCJQy4gPC9kaXY+
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列方程中:①-x2-2x=;②3y(y+1)=4y2+1;③-2x+1=0;④2x2-2y+3=0,其中是一元二次方程的有( )
A: 1个 |
B: 2个 |
C: 3个 |
D: 4个 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOiAg+Wvn+S4gOWFg+S6jOasoeaWueeoi+eahOWumuS5ie+8jOS4gOWFg+S6jOasoeaWueeoi+aMh+eahOaYr++8muWPquWQq+acieS4gOS4quacquefpeaVsO+8jOacquefpeaVsOeahOacgOmrmOasoeaVsOaYrzLnmoTmlbTlvI/mlrnnqIs=
- 提示2:IOagueaNrui/meS4quWumuS5ie+8jOWvueS4iui/sOWbm+S4qumAiemhueWPmOW9ouS5i+WQjui/m+ihjOiuqOiuuuWNs+WPr+mAieWHug==
- 答案:Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.把方程x(x+2)=5(x-2)化成一般式,则a、b、c的值分别是( )
A: 1,-3,10 |
B: 1,7,-10 |
C: 1,-5,12 |
D: 1,3,2 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOWPqumcgOimgeefpemBk+S4gOiIrOW9ouW8j+aYrzxpbWcgd2lkdGg9MTE5IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzEzL0NDL3JCQUNFMU1HeHNleTd1X0dBQUFDVGtoNmM4bzU2NS5wbmciPu+8jOS5i+WQjuaKiuS4iumdoueahOaWueeoi+WMluaIkOS4gOiIrOW9ouW8j+WNs+WPrw==
- 提示2:IOWGjeWvueeFp+eci+S6jOasoemhueezu+aVsO+8jOS4gOasoemhueezu+aVsO+8jOS7peWPiuW4uOaVsOmhue+8m+WNs+axgueahGHjgIFi44CBY+eahOWAvA==
- 答案:QQ==
PGRpdj7op6PvvJrnlLHmlrnnqIt477yIeCsy77yJPTXvvIh4LTLvvInvvIzlvpc8YnI+eDxzdXA+Mjwvc3VwPi0zeCsxMD0w77yMPGJyPuKItGHjgIFi44CBY+eahOWAvOWIhuWIq+aYrzHjgIEtM+OAgTEw77ybPGJyPuaVhemAiUEuIDwvZGl2Pg==
本课配套习题挑战模式4/5
单选题
难度系数:
4.已知关于x的方程(m-1)+2x-3=0是一元二次方程,则m的值为( )
A: 1 |
B: -1 |
C: ±1 |
D: 不能确定 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruS4gOWFg+S6jOasoeaWueeoi+eahOWumuS5ieW+l+WHum0tMeKJoDDvvIxtPHN1cD4yPC9zdXA+KzE9Mu+8jOaxguWHuuWNs+WPry4=
- 答案:Qg==
PGRpdj7op6PvvJriiLXlhbPkuo5455qE5pa556iL77yIbS0x77yJPGltZyB3aWR0aD00MSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8xMy9DQy9yQkFDRTFNR3hzMkF6M2lSQUFBQnNWSVNKUE05MjkucG5nIj4rMngtMz0w5piv5LiA5YWD5LqM5qyh5pa556iL77yMPGJyPuKItG0tMeKJoDDkuJRtPHN1cD4yPC9zdXA+KzE9Mu+8jDxicj7ljbNt4omgMeS4lG09wrEx77yMPGJyPuino+W+l++8mm09LTEuIDxicj7mlYXpgIlCLiA8L2Rpdj4=
本课配套习题挑战模式5/5
单选题
难度系数:
5.关于x的一元二次方程(a2-1)x2+x-2=0是一元二次方程,则a满足( )
A: a≠1 |
B: a≠-1 |
C: a≠±1 |
D: 为任意实数 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOacrOmimOagueaNruS4gOWFg+S6jOasoeaWueeoi+eahOWumuS5ieaxguinoy4g5LiA5YWD5LqM5qyh5pa556iL5b+F6aG75ruh6Laz55qE5piv77ya5Y+q5ZCr5pyJ5LiA5Liq5pyq55+l5pWw77yM5pyq55+l5pWw55qE5pyA6auY5qyh5pWw5pivMueahOaVtOW8j+aWueeoiw==
- 提示2:IOWvueS6juacrOmimO+8jOiLpeaDs+a7oei2s+acquefpeaVsOeahOacgOmrmOasoeaVsOaYrzLvvJvpgqPkuYjkuozmrKHpobnns7vmlbDkuIDlrprkuI3kuLowLuagueaNruatpO+8jOWNs+WPr+axguWHuuetlOahiA==
- 答案:Qw==
PGRpdj7op6PvvJrnlLHpopjmhI/lvpfvvJphPHN1cD4yPC9zdXA+LTHiiaAw77yMPGJyPuino+W+l2HiiaDCsTEuIDxicj7mlYXpgIlDLiA8L2Rpdj4=