If x + 1 is a factor of polynomial 2x2 + Kx then the value of K isA) – InterviewSolution

InterviewSolution

1.

If x + 1 is a factor of polynomial 2x2 + Kx then the value of K isA) -4 B) -2 C) 2 D) +4

Answer»

Correct option is (C) 2

\(\because\) \(x+1\) is a factor of polynomial \(2x^2+Kx.\)

\(\therefore\) x = -1 is a zero of polynomial \(2x^2+Kx.\)

\(\therefore\) \(2\times(-1)^2+K\times-1=0\)

\(\Rightarrow\) K = 2

Correct option is C) 2

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