(2x-2/5).(6+4/3x)=0 giup tuiiiii

2 bình luận về “(2x-2/5).(6+4/3x)=0 giup tuiiiii”

1. (2x-2/5).(6+4/3x)=0

   Trường hợp 1:

   2x-2/5=0

   =>2x=2/5

   =>x=2/5:2

   =>x=1/5

   Trường hợp 2:

   6+4/3x=0

   =>4/3x=-6

   =>x=(-6):4/3

   =>x=-9/2

   Vậy x in {1/5;-9/2}

    

   Trả lời
2. (2x – 2/5)(6 + 4/3x) = 0

   ⇒ 2x – 2/5 = 0 hoặc 6 + 4/3x = 0

   TH1 : 2x – 2/5 = 0

      ⇒ 2x = 2/5

      ⇒ x = 1/5

   TH2 : 6 + 4/3x = 0

      ⇒ 4/3x = -6

      ⇒ x = -9/2

   vậy x in {1/5;-9/2}

    

   Trả lời