Math, asked by parneetkaur6027, 6 months ago

If x=3 is one of the root of the quadratic equation x square - 2kx -6=0 find k

a. k=4

b. k=2

c. k=1

d.k=6

Answers

Answered by zeeshanhassan267

2

Step-by-step explanation:

f(x)=x^2-2kx-6=0

f(3)=3^2-2.k.3-6=0

=>9-6k-6=0

=>3-6k=0

=>6k=3

=> k=3/6

=> k=1/2

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