Question

Dado o polinômio p(x) = 5x³-8x²+x-23. Calcule.
a - P(0)
b - P(-2)
c - P(-½)

Answer 1

p(x) = 5x³-8x²+x-23. Calcule.a - P(0) = 5(0)³ - 8(0)² + 0 - 23 ==> 0-0+0-23==> - 23
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b - P(-2) = 5(-2)³ - 8(-2)² +(-2) - 23
5(-8) - 8(4) +(-2) - 23 ==> -40-32-2-23
==> - 72-25 ==> -97
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c - P(-½) = 5(-1/2)³ - 8(-1/2)² +(-1/2) - 23

5(-1/8) - 8(1/4) +(-1/2) - 23

 -5/8-2-1/2-23

(-5-16-8-184)/8

==> -97/8