Question

2. If p(x) = x3 - x2 + x + 1, then find the value of
p(1) + p(-1).​

Answer 1

Answer:

Step-by-step explanation:

p(x) = x^3 - x^2 + x + 1

p(1) = (1)^3 - (1)^2 + (1) + 1

p(1) = 1 - 1 + 1 + 1

p(1) = 2

again

p(x) = x^3 - x^2 + x + 1

p(1) = (-1)^3 - (-1)^2 + (-1) + 1

p(1) = -1 - 1 -1 + 1

p(1) = -2

then

p(1) + p(-1)

or 2 + (-2)

or 2 - 2

or 0

Answer 2

Answer:

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

p(1)=3-2+2

p(1)= 1+2

p(1)=3

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

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

p(-1)= -1

p(1)+ p(-1)

(3)+(-1)

3-1

2