8 . ( 2x – 6 ) . ( 5 – x ) = 0 Tìm x

2 bình luận về “8 . ( 2x – 6 ) . ( 5 – x ) = 0 Tìm x”

1. Vì 8 . ( 2x – 6 ) . ( 5 – x ) = 0, nên :

   {( 2x – 6 =0),(5 – x=0):}

   Nếu 2x-6=0

   ->x=3

   Nếu 5-x=0

   ->x=5

   Vậy 😡 in {3;5}

   Trả lời
2. 8 . ( 2x – 6 ) . ( 5 – x ) = 0

   =>$\left \{ {{2x-6=0} \atop {5-x=0}} \right.$

   => $\left \{ {{x=3} \atop {x=5}} \right.$

   Vậy x in {3;5}

   Trả lời