Question

Find the zeros of the quadratic polynomial 5x^{2}-4-8x and verify the relationship between the zeros and the coefficient of the given polynomial.

Answer 1

2 will be zero of polynomial in 5x^2 -4-8x
let p(x)= 5x^2 -4-8x
     p(2)= 5x2^2 - 4- 8x2 
          = 20 -4 -16
          = 20 -20
          = 0
hence verified