FACTORIZATION 2

Factorize completely an + ar - nr - n².  

solution

= an + ar - nr - n².

= a(n + r) - n(r + n).

= (n + r)(a - n).

  Hence an + ar - nr - n². =  (n + r)(a - n).   

TRY THIS..................

Factorize completely ay + ar - yr - y².