Question

a (1 - log2 x)(2 - log2 x)=0.​

Answer 1

 

$\displaystyle\bf\\a)\\\\(1 - log_2 x)(2 - log_2 x)=0\\\\\implies~(1 - log_2 x)=0~~~sau~~~(2 - log_2 x)=0\\\\Cazul~1:\\1 - log_2 x=0\\log_2 x=1\\x_1=2^1\\\boxed{\bf x_1=2}\\\\\\Cazul~2:\\2 - log_2 x=0\\log_2 x=2\\x_2=2^2\\\boxed{\bf x_2=4}$