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China normal university printing plate ninth grade mathematics unary quadratic equation. Want an answer?
1、X 1=0、X2=2/3、

2、X 1=√3-3,X2=-√3-3

3、X 1=0,X2=-√3- 1,

4、X=4,

5、X 1=√2+√3,X2=√2-√3

6、X 1=-4+4√2,X2=-4-4√2

7、X 1=(3+√53)/2,X2=(3-√53)/2

8、X 1= 1/2,X2=- 1/2