When a number is multipled by itself the product is said to be _____ of the number

Every number is a multiple of itself.

A decimal number is multiplied by itself. If the product is 51.84, find the number.

When -1 is multiplied by itself 100 times, the product is:

An odd number when multiplied by itself gives 2401 find the number

A number is multiplied 3 times by itself and then 61 is subtracted from the product obtained. If the final result is 9200, then the number is