2 years ago

Find the smallest non-zero whole number n such that 756n is a perfect cube.

Mathematics

1 answer:

Kitty [74]2 years ago

5 0

Step-by-step explanation:

756 = 2² * 3³ * 7.

For 756n to be a perfect cube, all of its prime factors must have a power that is a multiple of 3.

How to get from 2² to 2³: Multiply by 2.

3³ has already a power that is a multiple of 3.

How to get from 7 to 7³: Multiply by 7².

Hence n = 2 * 7² = 98.

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