Question

Дано
x=t^2-2t
x=2-t
Найти
x-?

Answer 1

${t}^{2} - 2t = 2 - t \\ {t}^{2} - t - 2 = 0 \\ t = - 1 \\ t = 2$

$x = 2 - ( - 1) = 3 \\ x = 2 - 2 = 0$