Question

If (x + 1) is a factor of 2x² + kx the value of k is-------
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Answer 1

Answer:

k=2

Step-by-step explanation:

dividing 2x² + kx with (x + 1)

=2x

reminder = x(k-2)

but if (x + 1) is factor than (x + 1)=0

.:.x(k-2)=0

.:.k-2=0

.:.k=2

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Answer 2

Answer:

k=-2

Step-by-step explanation:

By factor theorem

x+1=0

x=-1

Then,

2(-1)^2+K(-1)=0

2×1-k=0

2-k=0

-k=-2

Hope this helps