express the area of the entire rectangle ?

Answer:
[tex] \red {\boxed{ \bold{ A= {x}^{2} + 10x + 24 }}}\\ [/tex]
Step-by-step explanation:
Length of rectangle (l) = (x + 6) units
Width of rectangle (w) =(x + 4) units
Let A represents the area of rectangle.
[tex]A= lw \\ = (x + 6)(x + 4) \\ = {x}^{2} + (6 + 4)x + 6 \times 4 \\ \purple {\boxed{ \bold{ A= {x}^{2} + 10x + 24 }}}\\ [/tex]