问题 解答题
解方程:
(1)(x+1)2-144=0
(2)3(x-2)2=x(x-2)
(3)
1
2
x2-
1
3
x-
1
6
=0

(4)(x+2)2-10(x+2)+24=0.
答案

(1)∵(x+1)2-144=0,

∴(x+1)2=144,

∴x+1=±12,

解得:x1=11,x2=-13;

(2)∵3(x-2)2=x(x-2),

∴(x-2)(3x-6-x)=0,

∴(x-2)(2x-6)=0,

即x-2=0或2x-6=0,

解得:x1=2,x2=3;

(3)∵

1
2
x2-
1
3
x-
1
6
=0,

∴3x2-2x-1=0,

∴(3x+1)(x-1)=0,

即3x+1=0或x-1=0,

解得:x1=-

1
3
,x2=1;

(4)∵(x+2)2-10(x+2)+24=0,

∴(x+2-4)(x+2-6)=0,

即(x-2)(x-4)=0,

即x-2=0或x-4=0,

解得:x1=2,x2=4.

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