Question

.If sum of zeros of the quadratic polynomial f(x) = kx2

-3x+5 is 1 , then the value of k is:

a) 1/3 b) -1/3 c) 3 d) -3​

Answer 1

Answer:

Given that 1 is the zero of quadratic polynomial x^2 + kx - 5, it means that the value of x is 1 and on applying the value of x( i.e. 1 ) result of the given polynomial will be 0. Substitute the value of x in the quadratic polynomial. Therefore the value of k satisfying the given quadratic polynomial is 4