Find the measures of two angles, one positive and one negative, that are coterminal with pi / 8 .

The given angle is PI/8
to find the coterminal angles add 2pi for the positive and subtract 2pi for the negative:
positive = PI/8 +2PI = 17pi/8
negative = PI/8 - 2PI = -15PI/8

seventeen pi divided by eight; negative fifteen pi divided by eight is the correct answer

If this is the question f(x)= -x2 +4x-3 f(-1)= )2 +4 (-1)-3 =2-4-3 f(-1) =-5