A web browser is open on your computer screen. The length is shown as (x+7) and the width is (x-2). The area of the browser window is 24 inches. Find the length of the browser window x.

Question

Part B is the browser covers 3/13 of the screen. What are the dimensions of the screen?

Answer 1

(x+7)(x-2) = 24

x^2 + 5x - 14 = 24

x^2 + 5x - 38 = 0

x = [-5 +or- sqrt( 25 + 4*38)]/2

x = [-5 + sqrt(177)]/2 <-- negative branch results in negative measures

the screen is 13[ sqrt(177]-5]/6