Answer:
15x² + 22x + 8
Step-by-step explanation:
The length is the sum of the 2 parts, that is (5x + 4)
The width is the sum of the 2 parts, that is (3x + 2)
Area = length × width, that is
A = (5x + 4)(3x + 2) ← expand factors using FOIL
= 15x² + 10x + 12x + 8 ← collect like terms
= 15x² + 22x + 8
