(1)
⁵√625×⁵√160= ⁵√(625×160) = ⁵√(5⁴ * 5 * 32) = ⁵√(5⁵ × 2⁵) = 5 * 2 = 10
(2)
⁴√27×⁴√48= ⁴√(27×48) = ⁴√(3³ * 3 * 16) = ⁴√(3⁴ × 2⁴) = 3 * 2 = 6
(3)
³√24 × ³√9= ³√(3 * 8 * 9) = ³√(3 * 2³ * 3²) = ³√(3³ × 2³) = 3 * 2 = 6
(4)
³√45׳√75= ³√(45× 75) = ³√(5 * 9 * 3 * 25) = ³√(5³ × 3³) = 5 * 3 = 15