Question

2tв квадрате – 72 = 0

Answer 1

Решение:
2t²-72=0
2t²=72
t²=72/2=36
t1,2=+-√36=+-6
t1=6
t2=-6

Answer 2

$2t^{2} -72 = 0 | :2\\ t^{2} - 36 = 0 \\ (t - 6)(t+ 6)= 0 \\ t - 6= 0 \\ t=6$
или
$t + 6= 0 \\ t= - 6$

Ответ:  6 ; - 6