Question

Is 920 a perfect cube? If not, Find the smallest number by which it should be multiplied to get a perfect cube.




#NO - SPAM!

Answer 1

Answer:-

920 × 5×5×23×23 = (2×5×23)³

=(230)³ perfect cube

Explanation:-

Resolving 920 into prime factors,we get:

2 | 920

________

2 | 460

________

2 | 230

________

5 | 115

________

23

920 = 2×2×2×5×23

The prime factors 5,23 doesn't appear in a group of three factors.

So, 920 is not a perfect cube.

Hence , the smallest number by which it is to be multiplied to make it a perfect cube is 5×5×23×23 = 13225

Answer 2

how can I become moderator please tell

please

and 920 is not a perfect cube

we had to multiply 23 to get perfect cube

and pls tell how can I become moderator