Question

find the value of k for which one root of quadratic equation Kx2 - 14x+8=0is 2

Answer 1

Answer:

K = 5

Step-by-step explanation:

Sum of zero/roots = -b/a = coff. of x / coff of x^{2}

product of zero / roota = c/a = cost. term / coff. of x^{2}

consider

3x^{2}  - kx +6 = 0

a= 3

b = -k

c = 6

sum of roots = -b/a

                   = - (-k) /  3

                  = k/3

sum = 3

k/3 = 3

k = 9