Algebramedium · Past Paper
Which of the following polynomials has (x + 1) as a factor?
Ax^3 + x^2 - x + 1
Bx^3 + x^2 + x + 1
Cx^4 + 3x^2 + 2
Dx^2 - 2x + 1
✓ Correct Answer: B — x^3 + x^2 + x + 1
P(-1) = -1 + 1 - 1 + 1 = 0 for option 'b'.
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