I. $2{x^2} + x - 28 = 0$

II. $2{y^2} - 23y + 56 = 0$

I. $2{{ m{x}}^2} + { m{x}} - 28 = 0$

$2{{ m{x}}^2} + 8{ m{x}} - 7{ m{x}} - 28 = 0$

$2{ m{x}}left( {{ m{x}} + 4} ight) - 7left( {{ m{x}} + 4} ight) = 0$

$left( {2{ m{x}} - 7} ight)left( {{ m{x}} + 4} ight) = 0$

$x = - 4,frac{7}{2}$II. $2{{ m{y}}^2} - 23{ m{y}} + 56 = 0$

$2{{ m{y}}^2} - 16{ m{y}} - 7{ m{y}} + 56 = 0$

$2{ m{y}}left( {{ m{y}} - 8} ight) - 7left( {{ m{y}} - 8} ight) = 0$

$left( {2{ m{y}} - 7} ight)left( {{ m{y}} - 8} ight) = 0$

$y = frac{7}{2},8$

${ m{y}} ge { m{x}}$