Answer:
-31/4
Explanation:
P(2)= (2)^2-4*2+3=-1
P(-1)= (-1)^2-4(-1)+3=8
P(1/2)= (1/2)^2-4*1/2+3=5/4
P(2)-P(-1)+P(1/2)= -1-8+5/4=-31/4
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