Question

Kxx+14x+8 find k if one root is 2

Answer 1

if one root is 2

it means x=2

Kx^2 +14x+8 = 0

k(2)^2 + 14(2) + 8 = 0

4k + 28 + 8 = 0

4k + 36 = 0

k = -36/4

k = -9

hope it helps