Question

if p(x)
$= 3 x {}^{2} - 1$
​

Answer 1

Answer:

$if \: p(x) = 3 {x}^{2} - 1 \\ for \: finding \: the \: roots\: or \: the \: value \: of \: x \: we \: have \: to \: put \: p(x) = 0 \\ 0 = 3 {x}^{2} - 1 \\ 3 {x}^{2} = 1 \\ {x}^{2} = 1 \div 3 \\ x = + - \sqrt{1 \div 3} \\ \\ so \: the \: value \: of \: x = - \sqrt{ \frac{1}{3} } \: and \: \sqrt{ \frac{1}{3} }$

Hope it helps you.