Question

Làm tính cộng: 2 x - 2 x 2 - 4 + 1 - x x 2 - 2 x . 

A.  x 2 - 3 x + 2 ( x + 2 ) ( x - 2 ) x  

B.  x 2 + 3 x + 2 ( x + 2 ) ( x - 2 ) x  

C.  x 2 - 3 x - 2 ( x + 2 ) ( x - 2 ) x

D. x 2 - 3 x + 2 ( x + 2 ) ( x - 2 ) x 2  

Answer 1