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Descomponemos ambos radicandos en producto de sus factores primos:
72|2 32|2
36|2 16|2
18|2 8|2
9|3 4|2
3|3 2|2
1| 1|
72 = 2³×3²
36 = 2⁵
3√72 = 3√2³×3² = 3√2²×√2×√3²=3×2×3×√2 = 18√2
3√32 = 3√2⁵=3×√2²×√2²×√2 = 3×2×2=12√2
Si 3 raíz ∛
Sería de la siguiente manera:
∛72 = ∛2³×3² = ∛2²×∛3³ = 3∛2
∛32 = ∛2⁵ = ∛2³×∛2² = 2∛4