31.
f(-1) = |-1 + 1| = 0, т.к. -1 > -2
f(-3) = 3 - 4|-3| = 3 - 12 = -9, т.к. -3 < -2
f(-1) - f(-3) = 0 - (-9) = 9
Ответ: D) 9
32.
(3x - 2)/2 = 0
3x - 2 = 0
3x = 2
x = 2/3
подставим x = 2/3
f(0) = (2/3)² - (2/3) - 1 = 4/9 - 2/3 - 1 = 4/9 - 6/9 - 9/9 = -11/9
Ответ: D) -11/9