Question

⚠️ПОМОГИТЕ С ЗАДАНИЯМ⚠️​

Answer 1

$\frac{t ^{2} + 10t}{10} - \frac{2t + 5}{2} = 20 \\ \\ \frac{t^{2} + 10t - (5(2t + 5))}{10} = 20 \\ \\ t^{2} + 10t - 10t - 25 = 200 \\ \\ t^{2} = 225 \\ \\ t1 = 15 \\ \\ t2 = - 15$

Ответ: при t = 15; -15.