A) 2 ( X – 3) – 6X = 6 B) X2 + 7X – 8 = 0 2 6 9X X A X 3

Bài 2 (1 đ): Tìm x biết :

a) 2 ( x – 3) – 6x = 6 b) x

2

+ 7x – 8 = 0

2

6 9

x x

 

A x

 

3