The expression 5x2 + 2x + 3 represents the area of a square. The area of rectangle is represented by 2x2 + 3x + 1. Which expression represents th
combined area of the square and rectangle?
a. 7x4 + 5x2 + 4
c.7x2 + 5x + 4
b. 3x4 - x2 + 2
d. 3x2 - x + 2

Step-by-step explanation:

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!