Question

if X+1 is a factor of polynomial 2x²+kx then find the value of k​

Answer 1

Answer:

2

Step-by-step explanation:

Answer

Since x+1 is the factor  

Remainder = 0

∴kx−2x=0

∴kx=2x

∴k=2

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Answer 2

Answer:

if X+1 is the factor of polynomial

then -1 will be the zero of the polynomial

so substituting x= -1 in the polynomial should be equal to zero

2(-1)² +k(-1) =0

2-k=0

-k= -2

k = 2 ans

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