Question

if p(x) =4+3x-x^2+5x^3 find p(0) +p(2) +p(-1)​

Answer 1

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p(x) = 4+3x-x²+5x³ = 5x³-x²+3x+4

p(0) = 5(0)³-(0)²+3(0)+4 = 0-0+0+4

= 4

p(2) = 5(2)³-(2)²+3(2)+4 = 5(8)-4+6+4

= 40+6 = 46

p(-1) = 5(-1)³-(-1)²+3(-1)+4 = -5-1-3+4

= -6+1 = -5

p(0) + p(2) + p(-1) = 4 + 46 + (-5) = 50 - 5 = 45