Question 2: Factorize x 2 − y 2 − 4 x − 2y + 3
Question 2: Factorize
How to factorize ?
Solution:
Given expression is
To convert it to a factorize-able form , we add 1 and subtract 1, so that expression remains same ;
=
Rearranging terms as below;
Now this is in form !
Where;
(x+2) stands for a
and
(y+1) stands for b
So, according to formula;