The area of the front cabinet is 18 square feet. The width is 3 feet longer than the height. What are the dimensions of the cabinet?

Question

Must be put in a quadratic equation

Answer 1

x(x+3) = 18

 

x^2 + 3x = 18

 

 

x^2 + 3x - 18 = 0

 

(  x   +  6)(x    -     3 ) = 0

 

x+6=0 results in negative measures

 

x-3=0 ---> x =3

 

width is 6

height is 3