摘要:x=2是下列方程( )的解. A.2x=6 B.=0 C.x2=3 D.3x-6=0
网址:http://m.1010jiajiao.com/timu_id_2049504[举报]
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 .
查看习题详情和答案>>
(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
下列方程的解分别是:
(1)
+
=0 .
(2)
+
=
.
(3)2(x+
)2-3(x+
)-5=0 .
(4)x2+2x-
=2 .
(5)
+
=
.
(6)
-
=
-
.
(7)
+
=
+
.
查看习题详情和答案>>
(1)
| x-1 |
| x+1 |
| 2x |
| 1-x2 |
(2)
| x+3 |
| x2-3x+2 |
| x+2 |
| x2-4x+3 |
| x+1 |
| x2-5x+6 |
(3)2(x+
| 1 |
| x |
| 1 |
| x |
(4)x2+2x-
| 3 |
| x2+2x+1 |
(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 |