Jack M. answered 12/02/12
Keys to Chemistry, Calculus, Literature and More
Hello, Mathalina --
This is in the form of the difference of two squares.
Factoring for x2 - y2 is (x + y)(x - y).
In this case, the two terms are (x - 1) and (y - 3)
Factored terms are:
[(x - 1) + (y - 3)] [(x - 1) - (y - 3)]
We can simplify by removing brackets and parentheses and combining like terms:
(x - 1 + y - 3) (x - 1 - y + 3)
This simplifies to:
(x + y - 4) (x - y + 2)
Mathalina S.
Thank you!
12/02/12