Question

find the value if k, for which one root of quadratic equation kx2-14x+8=0

Answer 1

Answer:

k = 5

Step-by-step explanation:

given - kx -14x + 8 = 0 has a root 0

let the given eq. be p(x)

from factor theorem we've p(a) = 0 where a is root of the eq.

p(2)= 0

p(2) = k(2)^2 - 14*2 +8 = 0

= 4k - 28 + 8 = 4k -20=0

4k = 20

k = 20/4 = 5