The sqaure of 9 less than a number is 3 less than the number

Find two rational expressions that have the difference of 2-n/n-4

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?