Question

6 is the root of the equation 3 x square minus kx + 2 is equals to zero then find the value of k

Answer 1

let p(x)=3x²-kx+2,

since 6 is the root of the p(x),
then
p(6)=0,

3(6)²-k×6+2=0,

3×36-6k+2=0,

108+2=6k,

then
6k=110,

k=110/6=55/3