Question

PLEASE HELP IM STUCK

Answer 1

${ \qquad\qquad\huge\underline{{\sf Answer}}}$

Here we go ~

To get roots of the function, equate it with 0

$\qquad \sf \dashrightarrow \: 4 {x}^{2} - 36 = 0$

$\qquad \sf \dashrightarrow \: 4x {}^{2} = 36$

$\qquad \sf \dashrightarrow \: {x}^{2} = 36 \div 4$

$\qquad \sf \dashrightarrow \: {x}^{2} = 9$

$\qquad \sf \dashrightarrow \: x = \sqrt{9}$

$\qquad \sf \dashrightarrow \: x = \pm3$

So, the roots are 3 and -3 ~