Question

Find the smallest number by which 128 must be multiplied to obtain a perfect cube.​

Answer 1

128 = 32 x 4 = 8 x 4 x 4 = 4 x 4 x 4 x 2 = 2^7

To get a perfect cube the power must be a multiple of 3

so 4 must be multiplied to 128 to get cube

4 x 128 = 512 = (8)^3

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Answer 2

Answer:

4

Step-by-step explanation:

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