Question

considerando o polinomio p(x)=2x^2-x+1 calcule. a)p(1)
b) p(-1)
c)p(0)

Answer 1

P(x) = 2x² - x + 1
P(1) = 2 .1² - 1 + 1
P(1) = 2.1 - 1 + 1
P(1) = 2 - 1 + 1
P(1) = 2
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P(-1) = 2 .(-1)² - ( - 1) + 1
P(-1) = 2 .1 + 1 + 1
P(-1) = 2 + 1 + 1
P(-1) = 4
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P(0) = 2, 0² - 0 + 1
P(0) = 2.0 - 0 + 1
P(0) = 0 + 0 + 1
P(0) = 1