If 2 is a zero of the polynomial x2 – kx + 8, then k = A) 1 B) 4 – InterviewSolution

InterviewSolution

1.

If 2 is a zero of the polynomial x2 – kx + 8, then k = A) 1 B) 4 C) 6 D) 3

Answer»

Correct option is (C) 6

Given that 2 is a zero of polynomial \(x^2-kx+8.\)

\(\therefore2^2-2k+8=0\)

\(\Rightarrow\) 2k = 4+8 = 12

\(\Rightarrow\) \(k=\frac{12}2=6\)

Correct option is C) 6

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