题目内容
(1)计算:
÷(
+
)+
;
(2)解方程:(x-3)2+4x(x-3)=0.
| 6 |
| 1 | ||
|
| 1 | ||
|
| 50 |
(2)解方程:(x-3)2+4x(x-3)=0.
(1)原式=
÷
+5
=
+5
=
+5
=6
-6
+5
=6
-
.
(2)(x-3)2+4x(x-3)=0
(x-3)(x-3+4x)=0,
x-3=0,x-3+4x=0,
x1=3,x2=
.
| 6 |
| ||||
|
| 2 |
=
| 6 | ||||
|
| 2 |
=
6(
| ||||||||
(
|
| 2 |
=6
| 3 |
| 2 |
| 2 |
=6
| 3 |
| 2 |
(2)(x-3)2+4x(x-3)=0
(x-3)(x-3+4x)=0,
x-3=0,x-3+4x=0,
x1=3,x2=
| 3 |
| 5 |
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