What is the irrational cube root ^3√72

rewritten as a product of an integer and another irrational cube root? (1 point)

1 answer

To rewrite the cube root of 72, \(\sqrt[3]{72}\), as a product of an integer and another irrational cube root, we can start by factoring 72 into its prime factors.

The prime factorization of 72 is: \[ 72 = 2^3 \times 3^2 \]

Now, we can rewrite \( \sqrt[3]{72} \) using these factors: \[ \sqrt[3]{72} = \sqrt[3]{2^3 \times 3^2} \]

Using the properties of cube roots, we can separate the cube root of the product: \[ \sqrt[3]{72} = \sqrt[3]{2^3} \times \sqrt[3]{3^2} \]

Now, we know that \(\sqrt[3]{2^3} = 2\), so we can simplify: \[ \sqrt[3]{72} = 2 \times \sqrt[3]{3^2} \]

Thus, the cube root of 72 can be expressed as: \[ \sqrt[3]{72} = 2\sqrt[3]{9} \]

So the final answer is: \[ \sqrt[3]{72} = 2\sqrt[3]{9} \]