Question

find the zeros of the quadratic polynomial (8$8 x^{2} -4$ and verify the relation between the zeros and coefficients

Answer 1

$8 x^{2}-4$
$4(2 x^{2} -1)$
as 4 cannot b equal to 0
so, $2 x^{2} -1=0$
$x^{2} = -1/2 and 1/2$
$\sqrt{ x^{2} } = \sqrt{1/2} and \sqrt{-1/2}$ these are the two values of x.
verification
xy =c/a
$\sqrt{1/2} multiply \sqrt{-1/2} = -1/2$,also -4/8 =-1/2