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Answer :

Given:

[tex]\sqrt[3]{1728}[/tex]

Aim:

We need to find the cube root of 1728.

Explanation:

Consider the prime factors of the number 1728.

[tex]1728=2\times2\times2\times2\times2\times2\times3\times3\times3[/tex]

[tex]1728=(2\times2\times2)\times(2\times2\times2)\times(3\times3\times3)[/tex]

[tex]1728=2^3\times2^3\times3^3[/tex]

[tex]1728=(2\times2\times3)^3[/tex]

[tex]1728=12^3[/tex]

Take cube root on both sides.

[tex]\sqrt[3]{1728}=\sqrt[3]{12^3}[/tex]

[tex]\sqrt[3]{1728}=12[/tex]

Final answer:

[tex]\sqrt[3]{1728}=12[/tex]

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