Объяснение:
а)
f(-2) = (-2)^2+2 = 4+2 = 6
f(0.5) = 0.5^2+2 = 2.25
f(1) = 1^2+2 = 3
б)
f(-2) = 2*(-2)^2+3*(-2)-4 = 2*4-6-4 = 8-6-4 = -2
f(0.5) = 2*0.5^2+3*0.5-4 = 2*0.25+1.5-4 = 0.5+1.5-4 = 2-4 = -2
f(1) =2*1^2+3*1-4 = 2+3-4 = 1
