Question

if one zero is polynomial f(x)=(kxk+4)XxX+13x+4k is reciprocal of the others,then k=?

Answer 1

What's kxk and XxX

Answer 2

f(x)= (k^2 + 4)x^2 + 13x + 4k, is it like this ?

Answer 3

if so, x+1/x will satisfies when a = c
with a coeff of x^2 and c is constant

Answer 4

known, a = k^2 + 4, and c = 4k
a = c
k^2 + 4 = 4k
k^2 - 4k + 4 = 0
solve for k ....

Answer 5

@Manishakumari