Question

Решите уравнение СРОЧНО!!!

Answer 1

$\frac{1}{9} {a}^{2} = 1 \\ {a}^{2} = 1 \div \frac{1}{9} = 1 \times 9 = 9 \\ a1 = 3$

$a2 = - 3$

Answer 2

Смотри.......................