Question

Answer this question please and show all your work please

Answer 1

Answer:

4.41

Step-by-step explanation:

Use the definition of square:

$a^2=a\times a$

Hence,

$2.1^2=2.1\times 2.1$

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

$2.2\times 2.1=4.41$

so

$2.1^2=4.41$