Question

The width w of a rectangular swimming pool is x + 5.

The area A of the pool is x^2 + 4x – 5. What is an expression for the length of the pool?

a. x - 1
b. x – 5
C. 5
d. x + 1​

Answer 1

a. x-1

Explanation:

Area= x^2+4x-5

Width= x+5

Area= Length*breadth

x^2+4x-5=length*x+5

Length=x^2+4x-5/x+5

therefore, length= x-1