A) 4X2 - 36X + 56 = 0 ; B) 5X ( X + 2010 ) - X - 2010 = 0 ; C ) 2X3 = X
Câu 2 :( 2 đ )Tìm x :
a) 4x
2
- 36x + 56 = 0 ; b) 5x ( x + 2010 ) - x - 2010 = 0 ; c ) 2x
3
= x
Câu 2 :( 2 đ )Tìm x :
a) 4x
2
- 36x + 56 = 0 ; b) 5x ( x + 2010 ) - x - 2010 = 0 ; c ) 2x
3
= x