Question

if x-2 is a factor of 2x+k then value of k is​

Answer 1

Answer: - 4

Step-by-step explanation:

1) if x-2 is the factor

then, x= 2

2x + k

substitute the value of x = 2

2.2 + k

4 + k = 0

k = - 4

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Answer 2

If ( x - 2 ) is a factor of 2x + k , then

x - 2 = 0

→ x = 2

2 is the zero of the polynomial 2x + k

Now,

p(x) = 2x + k

→ p(2) = 2 × 2 + k

→ 0 = 4 + k

→ -4 = k

Hence, k = -4