Question

Examine if 398 is a perfect cube. If not, then find the smallest number that must be subtracted from 398
obtain a perfect cube.​

Answer 1

Step-by-step explanation:

We know that

7³=343

8³=512

So, clearly 398 is not perfect cube.

398−343=55

So, 55 must be subtracted from 398 to make it perfect cube.

Hence, this is the answer.

Answer 2

Answer:

We know that

( 7 )^3 = 343

( 8 )^3 = 512

So, clearly 398 is not perfect cube.

398−343=55

So, 55 must be subtracted from 398 to make it perfect cube.

Hence, this is the answer.