Question

8. If x = 1 is a factor of 3x2 – 2kx +7 = 0 then K =
(a)-5 (b) 5 (c) 10
(d) -10​

Answer 1

Answer:

The answer to your question is (b) 5

Explanation:

Put the value of x in equation 3x^2 - 2kx + 7 = 0

3 -2k + 7 = 0

2k = 10

k = 5

Answer 2

Answer:

Given x is a factor

So 3x1-2x1k+7=0

=>2k=10

=>k=5