1)
f(-1/2) = f(0.5)
f(-1/2) = f(-0.5) = (-0,5)²-5=0,25-5=-4,75
f(0.5) = (0,5)²-5=0,25-5=-4,75
2)
f(0) < f(-2)
f(0) = (0)²-5=0-5=-5
f(-2) = (-2)²-5=4-5=-1
3)
f(-2) > f(1)
f(-2) = (-2)²-5=4-5=-1
f(1) = 1²-5=1-5=-4
4)
f(-3) < f(4)
f(-3) = (-3)²-5=9-5=4
f(4) = 4²-5=16-5=11