greatnat (3x+2)² - (4-3x)² <37x+14
(3x+2)(3x+2)=9x²+12x+4        (4-3x)(4-3x)=9x²-24x+16
9x²+12x+4-9x²+24x-16 < 37x+14
36x-12< 37x+14
36x-37x < 12+14
-x < 26
x< -26    т.е. x∈(-26; -∞)

(5x-2)(5x-2)=25x^2-20x+4    (4x-1)(4x-1)=16x^2 - 8x+1
25x^2 -20x+4-15 > 16x^2 -8x+1+9x^2
25x^2 -25x^2 -20x+8x > 11+1
-12x > 12
x>-1  x∈(-1; + ∞)