Question

P(3) if P(x) =x^3+3x^2-x+5

Answer 1

P(x)=x^3+3x^2-x+5


So,
P(3)=(3)^3+3(3)^2-(3)+5
=27+3(9)-8
=27+27-8
48
P(3)=48

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Answer 2

$if \: p(x) = x^3 + 3x^{2} - x + 5 \\ \: \: \: \: \: p(3) = (3)^{3} + 3(3)^{2} - 3 + 5 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 27 + 27 - 3 + 5 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 54 + 2 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 56$
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