p(x)=x^2-4x+3, find p(2)-p(-1)+p(1)
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Answer:
-9
Step-by-step explanation:
P(x) = x^2 - 4x + 3
P(2) = (2)^2 - 4(2) + 3 = 4-8+3 = 7-8 = -1
P(-1) = (-1)^2 - 4(-1) + 3 = 1+4+3 = 8
P(1) = 1^2 - 4(1) + 3 = 1-4+3 = 0
P(2) - P(-1) + P(1) = -1 - (8) + 0 = -9
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