Question

If x - 1 is a factor of the polynomial 2x^2 + kx, then the value of k is:​

Answer 1

p(x) = x - 1

x = 1

p(x) = 2(1)² + k(1)

= 2 + k

k = -2

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Answer 2

Answer:

f(x)=2x²+Kx

x-1=0

x=1

f(x)=2x²+Kx

f(1)=2(1)²+k(1)

0=2+k

k=-2