(2m + 3)(m^2 – 2m + 1)
= 2m^3 - 4m^2 + 2m + 3m^2 - 6m + 3
= 2m^3 - m^2 - 4m + 3

–8x – 8y = 0
–8x + 2y = –20

(–8x + 2y = –20) - (–8x – 8y = 0)
10y = -20
y = -20/10
y = -2

–8x – 8(-2) = 0
-8x + 16 = 0
-8x = -16
x = -16/-8
x = 2

Solution set: (2, -2)

Lori rented a car for one day. The daily rental rate was $12.50 plus 25 cents per mile. The total cost of her rental was $46. Lori drove 134 miles that day:
$46 - 12.50 = $33.50.
$33.50 / 0.25 = 134.