Question

Please help with this

Answer 1

x^2 + 10x +21

Explanation:

Your multiplying the Squares together and then adding them

Blue Square : x*x= x^2

Pink Square : x*7= 7x

Green Square: x*3= 3x

Orange Square: 3*7= 21

Now we add all the squares together to get the total area.

x^2+7x+3x+21

x^2+ 10x +21