Question

The total area of two rectangles can be represented by the expression

(x)(3x + 1) + (2x)(x + 3). Which expression represents the total area of the two
rectangles combined?
A. 7x2
B. 6x3 + 6x2
C. 6x2 + 7x
D. 5x2 + 7x

Answer 1

D

Explanation:

(x)(3x + 1) + (2x)(x + 3)

=3x^2+x+2x^2+6x

=3x^2+2x^2+x+6x

=5x^2+7x