X^3 +8x^2 + 12x/ x^2 + x - 30 x x^2 + 81/ x^3 + = 18x

Asquare parking lot has 6,400 square meters what is the length in meters

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.