Simplify cube root of 729
Problem
Solution
Identify the number under the radical, which is
729 Determine the prime factorization of
729 by dividing by3 repeatedly.Calculate the factors:
729=3×243=3×81=3×27=3×9=3×3=3 Rewrite the expression using the exponent form of the cube root, which is
a1/3 Apply the power of a power rule:
(3)1/3=3(6×1/3)=3 Evaluate the resulting power:
3=9
Final Answer
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