Complete the square

2x^2-206=-20x

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days