题目内容
(1)计算:
×
+(
-
)(
+
)
(2)解方程:3x(x-1)=2(x-1)
| 8 |
|
| 32 |
| 24 |
| 32 |
| 24 |
(2)解方程:3x(x-1)=2(x-1)
(1)原式=
+(
)2-(
)2
=2+32-24,
=10;
(2)3x(x-1)=2(x-1)
3x(x-1)-2(x-1)=0,
(x-1)(3x-2)=0,
x-1=0,3x-2=0,
x1=1,x2=
.
8×
|
| 32 |
| 24 |
=2+32-24,
=10;
(2)3x(x-1)=2(x-1)
3x(x-1)-2(x-1)=0,
(x-1)(3x-2)=0,
x-1=0,3x-2=0,
x1=1,x2=
| 2 |
| 3 |
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