1) ²⁸√a⁷ = (a⁷)^(1/28) = a^(7/28) = a^(1/4) = ∜a
Ответ: ∜a
2) ⁵√b³⁴√b³ = (b³*∜b³)^(1/5) = ((b³)¹⁺¹/⁴)^(1/5) = ((b³)^(5/4))^(1/5) = (b³)^(1/4) = ∜b³
Ответ: ∜b³
3) ⁶√m⁶, y ≤ 0 = |m| = -m, так как y ≤ 0.
Ответ: -m