Question

$t { }^{2} - 3$

Answer 1

${t}^{2} - 3 = 0 \\ \\ {t}^{2} - \sqrt{3}t + \sqrt{3}t - 3 = 0 \\ \\ t(t - \sqrt{3}) + \sqrt{3} (t - \sqrt{3} ) = 0 \\ \\ (t - \sqrt{3} )(t + \sqrt{3} ) = 0 \\ \\ t = \sqrt{3} \: or \: - \sqrt{3}$

hope it helps