The area is equal to the length multiplied by the width.
So, the area is (x + 7)(x + 3).
Simplifying this expression, we can expand it by using the distributive property.
(x + 7)(x + 3) = x(x) + x(3) + 7(x) + 7(3)
= x^2 + 3x + 7x + 21
= x^2 + 10x + 21
Therefore, the correct answer is:
O x^2 + 10x + 21.
Find the area.
Length: x + 7
Width: x + 3
O 2x + 10
O x ^ 2 + 10x + 21
O 4x * 20
O x ^ 2 + 21
1 answer