Question

If one zero of the quadratic polynomial kx^2 + 3x + k is 2, then find the value of k.

Answer 1

check the attachment.....

Answer 2

let p(x) = kx^2 +3X +K ......... 1

BECAUSE 2 IS ZERO OF p(x)

THEREFORE p(x) = 0

PUT X = 2 in 1

0=K(2)^2 + 3(2) + K

0=4K + 6 + K

0=5K+6

5K= -6

K = -6/5