Question

If P(x) = –x3 – 3x2 + 2x + 1, then the value of

P(–1) + P(1) is [1]

(1) 3 (2) 0

(3) –4 (4) –2​

Answer 1

Answer:

(3) -4

step by step explanation:

P(x) = –x^3 – 3x^2 + 2x + 1

P(-1)= -(-1)^3-3×(-1)^2+2(-1)+1

= 1-3×(1)-2+1

=1-3-2+1

=2-2-3

=(-3)

P(1)= -1^3-3×(1)^2+2×1+1

=(-1)-3+2+1

=(-1)

P(–1) + P(1) = (-3)+(-1)

= (-4)

therefore P(–1) + P(1) is (-4)

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