To know if a number is a perfect sqare of a perfect cube you:
perfect sqare
determine if its sqaure root is an integer. If is not an interger, then the number is not a perfect sqare
![\sqrt[]{121}=11](https://img.qammunity.org/2023/formulas/mathematics/college/t5bcbtujnbr2x3cfcniahis3uuo8me53am.png)
perfect cube
determine if its Cube root is an interger. If is not an interger then the number is not a perfect cube
![\sqrt[3]{121}=4.94](https://img.qammunity.org/2023/formulas/mathematics/college/28s0a571lc62v5fak2rr57rzfhpxfqyt0h.png)
Then so, 121 is a perfect cube, because is the result of (11*11)
121 is not a perfect cube