Question

find the cube root of 729

Answer 1

Find the factors of 729

729 = 3 × 3 × 3 × 3 × 3 × 3

Now pair them up in the form of two common numbers

729 = (3 × 3) × (3 × 3) × (3 × 3)

∛729 = ∛[(3 × 3) × (3 × 3) × (3 × 3)] = ∛ 3 x 3 x 3

             = (3 × 3) = 9

Answer 2

HeÿA ¡!

$\sqrt[3]{729} = 9$


as 9*9*9=729


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