Toán Lớp 8: ( x – 4 )( 5x – 2 ) – 3( x -4 ) = 0
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Toán Lớp 8: ( x – 4 )( 5x – 2 ) – 3( x -4 ) = 0
Tìm x
Comments ( 2 )
<=>(x-4)(5x-2-3)=0
<=>(x-4)(5x-2-3)=0
<=> \(\left[ \begin{array}{l}x-4=0\\5x-5=0\end{array} \right.\)
<=> \(\left[ \begin{array}{l}x=4\\5x=5\end{array} \right.\)
<=> \(\left[ \begin{array}{l}x=4\\x=1\end{array} \right.\)
Vậy x in {4;1}