Question

Answer this question please and show all your work please

Answer 1

4.41

Explanation:

Use the definition of square:

`a^2=a* a`

Hence,

`2.1^2=2.1* 2.1`

Multiply 2.1 by 2.1 using column multiplication (or using calculator):

`2.2* 2.1=4.41`

so

`2.1^2=4.41`