1) y' = 0
2) y'=1
3) y' =12
4) y' = 4x³
5)y'=40x⁴
6) y' =4x⁴ +12x³ + 10x
7) y'=12x(3x -5) +3(4x³ -8) = 36x² -60x +12x³ -24
8) y' = (24x³ + 144x² - 8x³)/(x + 6)²
9) y' = (x - 3 - x - 5)/(x -3)² = -8/(x -3)²
10) y' = (6x +9 - 6x +14)/(2x +3)² = 23/(2x +3)²
11) y' -=((2x -6)(2x +3) - (x² -6x +9)*2)/(2x +3)²
12) y' = (3x² +6x)(3x -3) - (x³ +3x²)*3)/(3x -3)²
13 y'= ((6x -2)(2x -3) - (3x² -2x -4)*2)/(2х -3)²
14) y' = (2(x² +3x) - (2x +1)(2x +3)) /(x² +3x)²