Question

If (x+1) is a factor of polynomial (2x² + kx) then the value of 'k' is ______ .



1) 2

2) 3

3) -2

4)-3​

Answer 1

( x+1) is a factor of p(x)

x = -1 is a zero

$2x^{2} +kx\\2(-1)^{2}+k(-1)=0\\2-k=0\\k=2$

Therefore option (1) is correct.