Question

The area of a rectangle is 63 square feet. the length is two feet longer than the width. what is the width of the rectangle?

Answer 1

the width would be 7 feet. you would work it like this:

l= x+2
w= x

63=x(x+2)
63= x^2 +2x
0= x^2 + 2x -63
0= (x-7)(x+9)
x-7=0
x=7