Question

Tìm x: (2x-3)² : 3 = -9 : (2x - 3)

Answer 1

(2\(x\) - 3)² : 3 = - 9:(2\(x\) - 3) (đk \(x\) ≠ \(\dfrac{3}{2}\))

⇒ (2\(x\) - 3)².(2\(x\) - 3) = - 9.3

    (2\(x\) - 3)³ = - 27

    (2\(x\) - 3)³ =  (-3)³

    2\(x\) - 3 = - 3

   2\(x\) = - 3 + 3

   2\(x\) = 0

     \(x\) = 0

Vậy \(x\) = 0 

Answer 2

(2x-3)² : 3 = -9 : (2x-3)
(2x-3)².(2x-3) = -9.3
(2x-3)³ = -27 = (-3)³
=> 2x-3=-3
     2x   =-3+3=0
       x    = 0 : 2 = 0 => Vậy x = 0