Question

Express the area of the entire rectangle. you answer should be a polynomial in standard form.

Answer 1

Answer:x^2 + 9x + 20

Explanation:

You could just multiply (x+4)(x+5) and get x^2 + 9x + 20, but judging from the picture, it looks like they want you to split it into 4 rectangles

x^2 +4x+ 5x + 20 =x^2 +9x + 20, just like (x+4)(x+5)