Решите уравнение
( √ 8 + Х )*( √ 8 - X ) = X √ ( 64 - X^2 ) = X ( √ 64 - X^2 )^2 = X^2 64 - X^2 = X^2 64 = 2X^2 32 = X^2 X1 = √ 32 = 4 √ 2 X2 = - 4 √ 2