1) = (m-3)/2m - (m-4)(m+4)/m * 1/3(m+4) = (m-3)/2m - (m-4)(m+4)/3m(m+4) =
(m-3)/2m - (m-4)/3m = ( 3(m-3) - 2(m-4) ) / 6m = (3m - 9 - 2m + 8)/6m = (m-1)/6m
2) 2x^2 - 14x < (1+5x)(x-2)
2x^2 - 14x < x - 2 + 5x^2 - 10x
2x^2 - 14x - x + 2 + 5x^2 + 10x < 0
-3x^2 - 5x + 2 < 0
3x^2 + 5x - 2 > 0
1. y=3x^2 + 5x - 2
2. y = 0
D = 25 - 4*3*(-2)=25+24=49
x1=1/3
x2=-2
Ответ: (-бесконечность; -2) и (1/3; +бесконечность)