if x+1 is a factor of the polynomial 2x^2 +kx, then the value of k
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Answered by
26
Since x + 1 is factor of the polynomial - 1 satisfies the equation
p ( - 1 ) = 2 ( - 1 )² + k ( - 1 )
0 = 2 - k
k = 2
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Answered by
20
( X + 1 ) = 0
X = -1
P ( x ) = 2X² + KX
P (-1) = 2 × (-1)² + K × -1
=> 2 × 1 - K = 0
=> 2 - K = 0
=> - K = -2
=> K = 2
X = -1
P ( x ) = 2X² + KX
P (-1) = 2 × (-1)² + K × -1
=> 2 × 1 - K = 0
=> 2 - K = 0
=> - K = -2
=> K = 2
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