Question

What is the zero of quadratic polynomial 4xsquare -9

Answer 1

To find the zeros we should assume that value is zero.

$4 {x}^{2} - 9 = 0$
$4 {x}^{2} = 9$
${x}^{2} = \frac{9}{4}$
$x = \sqrt{ \frac{9}{4} }$
$x = \frac{ \sqrt{9} }{ \sqrt{4} }$




$x = \frac{3}{2}$
or
$x = - \frac{3}{2}$





therefore the zeroes of x are
$x = \frac{3}{ 2} or \: - \frac{3}{2}$