Question 269899
x^2+5x+4 . x^2+5x-14
________  __________
x^2-6x+8   x^2+8x+7
*****************************
(x+4)(x+1) (x+7)(x-2)
---------------------  Cancel out (x+1),(x+7) & (x-2)
(x-4)(x-2) (x+7)(x+1)
*****************************
(x+4)
-----  ans.
(x-4)