Question

if a and b are the zeroes of the quadratic polynomial f(x)=kx²+4x+4,then the value of a+b/ab is​

Answer 1

Answer:

-1

Step-by-step explanation:

kx^2+4x+4=0

a+b=-b/a

ab=c/a

from the equation,

a+b= -4/k

ab= 4/k

therefore,

a+b/ab= -4/k/4/k = -1

Answer 2

in quadratic equation ax²+bx+c

sum of zeros is -b/a and

product of zeros is c/a

so in kx²+4x+4

a+b/ab=-b/a×c/a

= -b/c

=-4/4

= -1