Question

Q2.If ( x-1) is a factor of 2x²+kx-1 then the value of k is
▪️1
▪️2
▪️-1
▪️-2
pls answer ❤️​

Answer 1

Answer:

I think -2

Step-by-step explanation:

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Answer 2

if x - 1 is a factor of 2x^2 + Kx - 1 then x= 1 should make the value of expression zero

putting x = 1 and equating to zero we get

2*1^2 + k*1 - 1 = 0

2 + k - 1 = 0

k + 1 = 0

k = -1