Hcf of x^2 - y^2 + 4y - 4​

Will mark brainliest question in the pic.

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

What is the solution to the equation in the & show work i’m very