1.

If x + 1 is a factor of the polynomial 2x2 + kx, then the value of k is (A) –3 (B) 4 (C) 2 (D) –2

Answer»

(c) 2 

Let p(x) = 2x2 + kx

Since, (x + 1) is a factor of p(x), then

p(-1)=0

2(-1)2 + k(-1) = 0

=> 2-k = 0 => k= 2

Hence, the value of k is 2.



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