Question

if the sum of the zeroes of the quadratic polynomial f (x)= kx^2-3x+5 is 1 , write the value of k

Answer 1

Hey!!!

Given quadratic polynomial is f(x)=kx2−3x+5
it is also given that sum of the zeroes of the given plynomial is 1..

sum of zeroes =-(b/a)=1
=-(-3/k)=1
=3/k=1
=k=>3

Hope this helps you ☺☺

Answer 2

if 1 is zero of f(x) quadratic polynomial the when we put 1 value in x
then f(x) = 0

f(x) = 0

kx²-3x+5 = 0

k(1)²-3(1)+5 = 0

k - 3 +5 = 0

k +2 = 0

k = -2

so the value of k is -2