Question

Sendo P(x) ≡ 4x³ + 5x² - x + 3, calcule:
a)P(0)
b)P(1)
c)P(-2)
d)P(i)

Answer 1

a) P(0)= 4.0³+5.0²-0+3= 3
b)P(1)= 4.1³+5.1²-1+3= 4+5-1+3=11
c)P(-2)=4.(-2)³+5.(-2)²-(-2)+3= 4.(-8)+5.4+2+3=
-32+20+5 = -7
d) P(i)= 4.i³+5i²-i+3