During a tour a rock group used an LED light emitting diode

During a tour, a rock group used an LED (light emitting diode) electronic screen as part of the stage backdrop. The rectangular screen, with an area of 5,891 square feet, had a length that was 8 feet more than three times its width. Find the dimensions of the LED screen.

Solution

According to the question
Let width = x ft
so Lenght = 3x + 8
Area L*B = 5891
Put the value
(3x + 8)(x) = 5891
3x^(2) + 8x - 5891 = 0
x = 43 neglect the negative value
so y = 3(x) + 8
= 129 ft
Answer