Упростить
х^2 - 5х + 6
------------------ =
х-2

1) x^2 - 5x + 6 = ( X - 3 )•( X - 2 ) D = 25 - 24 = 1 X1 = ( 5 + 1 ) : 2 = 3 X2 = ( 5 - 1 ) : 2 = 2 2) ( ( X - 3 )( X - 2 )) / ( X - 2 ) = X - 3