Tìm x biết ​\(x \in BC\left( {2;4;5;8} \right);100 jwplayer....

* Hướng dẫn giải

 \(\begin{array}{l} 2 = 2\\ 4 = {2^2}\\ 5 = 5\\ 8 = {2^3}\\ BCNN\left( {2;4;5;8} \right) = {2^3}.5 = 40\\ \Rightarrow BC\left( {2;4;5;8} \right) = B\left( {40} \right) = \left\{ {0;40;80;120;160;200;240;280;...} \right\}\\ mà\,\,100 < x < 150 \Rightarrow x = 120 \end{array} \)