task/29446256
√x = 7 ⇔ x =7² = 49.
3√x = - 3 ⇔ √x = - 1 ⇒ x ∈ ∅ ,, т.к, √x ≥ 0 .
√x = - 2 ⇒ x ∈ ∅ ,, т.к, √x ≥ 0 .
√ ( x-2 ) = 5 ⇔ x - 2 = 5³ ⇔ x =27 .
task/29446256
√x = 7 ⇔ x =7² = 49.
3√x = - 3 ⇔ √x = - 1 ⇒ x ∈ ∅ ,, т.к, √x ≥ 0 .
√x = - 2 ⇒ x ∈ ∅ ,, т.к, √x ≥ 0 .
√ ( x-2 ) = 5 ⇔ x - 2 = 5³ ⇔ x =27 .