求解1元2次方程习题用电脑里的画图软件写了发过来.
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求解1元2次方程习题
![](http://img.wesiedu.com/upload/0/27/0279fca79efb75f672c76724079479cd.jpg)
用电脑里的画图软件写了发过来.
![](http://img.wesiedu.com/upload/0/27/0279fca79efb75f672c76724079479cd.jpg)
用电脑里的画图软件写了发过来.
![求解1元2次方程习题用电脑里的画图软件写了发过来.](/uploads/image/z/7703232-24-2.jpg?t=%E6%B1%82%E8%A7%A31%E5%85%832%E6%AC%A1%E6%96%B9%E7%A8%8B%E4%B9%A0%E9%A2%98%E7%94%A8%E7%94%B5%E8%84%91%E9%87%8C%E7%9A%84%E7%94%BB%E5%9B%BE%E8%BD%AF%E4%BB%B6%E5%86%99%E4%BA%86%E5%8F%91%E8%BF%87%E6%9D%A5.)
(1)(x+5)²=9 x+5=±3 x1=8-2,x2=-8
(2)(x-1/2)²=1 x-1/2=±1 x1=3/2 ,x2=-1/2
(3)3(x+1)²=8 x+1=±2√6/3 x1=2√6/3-1,x2=-2√6/3-1
(4)(2x-1/4)²=145/9 2x-1/4=±√145/3 x1=√145/6+1/8. x2=-√145/6+1/8
(2)(x-1/2)²=1 x-1/2=±1 x1=3/2 ,x2=-1/2
(3)3(x+1)²=8 x+1=±2√6/3 x1=2√6/3-1,x2=-2√6/3-1
(4)(2x-1/4)²=145/9 2x-1/4=±√145/3 x1=√145/6+1/8. x2=-√145/6+1/8