Area of a square
[tex]5x^2\text{ + 2x + 3}[/tex]Area of a rectangle
[tex]2x^2\text{ + 3x + 1}[/tex]Final answer
[tex]\begin{gathered} \text{Sum of area of square and area of a rectangel} \\ =5x^2+2x+3+2x^2\text{ + 3x + 1} \\ =5x^2+2x^2\text{ + 2x + 3x + 3 + 1} \\ =7x^2\text{ + 5x + 4} \end{gathered}[/tex]