x=2是下列方程( )的解. ( ) A.2x=6 B.=0 C.x2=3 D.3x-6=0 查看更多

 

题目列表(包括答案和解析)

下列方程的解分别是:
(1)x3-3x2+2x=0
 

(2)x4-5x2+4=0
 

(3)(x2-3x)2-2(x2-3x)-8=0
 

(4)(x2-5x-6)(x2-5x+11)=18
 

(5)(x+1)(x+2)(x-3)(x-4)=36
 

(6)(x+1)(x-1)=1
 

(7)x2-3|x|+2=0
 

(8)(x+1)(x-1)=x+1
 

(9)x2-3|x|+2=0
 

(10)x4+2x3+5x2+4x-12=0
 

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下列方程的解分别是:
(1)
x-1
x+1
+
2x
1-x2
=0
 

(2)
x+3
x2-3x+2
+
x+2
x2-4x+3
=
x+1
x2-5x+6
 

(3)2(x+
1
x
)2-3(x+
1
x
)-5=0
 

(4)x2+2x-
3
x2+2x+1
=2
 

(5)
1
x2-2x-1
+
2
x2-2x-2
=
3
x2-2x-3
 

(6)
1
x-1
-
1
x-2
=
1
x-6
-
1
x-7
 

(7)
x-8
x-10
+
x-4
x-6
=
x-5
x-7
+
x-7
x-9
 

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下列方程的解为x=-1的是(  )

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下列方程的解分别是:
(1)x3-3x2+2x=0______.
(2)x4-5x2+4=0______.
(3)(x2-3x)2-2(x2-3x)-8=0______.
(4)(x2-5x-6)(x2-5x+11)=18______.
(5)(x+1)(x+2)(x-3)(x-4)=36______.
(6)(x+1)(x-1)=1______.
(7)x2-3|x|+2=0______.
(8)(x+1)(x-1)=x+1______.
(9)x2-3|x|+2=0______.
(10)x4+2x3+5x2+4x-12=0______.

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下列方程的解分别是:
(1)x3-3x2+2x=0   
(2)x4-5x2+4=0   
(3)(x2-3x)2-2(x2-3x)-8=0   
(4)(x2-5x-6)(x2-5x+11)=18   
(5)(x+1)(x+2)(x-3)(x-4)=36   
(6)(x+1)(x-1)=1   
(7)x2-3|x|+2=0   
(8)(x+1)(x-1)=x+1   
(9)x2-3|x|+2=0   
(10)x4+2x3+5x2+4x-12=0   

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