Question

2) Sendo p(x) = x3 - 5x2 + 3x - 4, determine:
a) p(O) =
b) p(2) =
c) P(i) =

preciso das contas. obrigado!​

Answer 1

a) p(0)= 0³ - 5.0²+3.0-4

p(0)= 0 - 0 + 0 -4

p(0)= -4

b) p(2)= 2³-5.2²+3.2-4

p(2)= 8 -5.4+6-4

p(2)= 8 - 20 +6 -4

p(2)= -12 +6-4

p(2)= -6 -4

p(2)= -10

c) p(i)= i³ - 5. i² + 3. i - 4

p(i)= - i - 5 . (-1) + 3i -4

p(i) = -i +5 +3i -4

p(i)= + 1 +2i

p(i)= 2i +1