Q. 193.7( 4 Votes )

If (x + 1) is a factor of 2x2+ kx, then k =?
A. -3

B. -2

C. 2

D. 4

Answer :

Let p (x) = 2x2 + kx


It is given that, (x + 1) is a factor of (2x2 + kx)


Thus, x = -1 is a factor of (2x2 + kx)


p (-1) = 0


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


2 – k = 0


k = 2


Thus, the value of k = 2


Hence, option C is correct

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