Problema Solution
a flag in the shape of a rectangle is 15inches less twice its width the area is 500 square inches find dimensions
Answer provided by our tutors
width = x
length = 2x - 15
(2x-15)(x) = 500
2x^2 - 15x - 500 = 0
2x^2 - 40x + 25x - 500 = 0
2x(x - 20) + 25(x - 20) = 0
(x- 20)(2x + 25) = 0
width = x = 20
length = 2*20 - 15 = 25