# How do you simplify the fractional expressions #1/(x-3) - 1/(x+3) - 1/(x-1) +1/(x+1)#?

##### 1 Answer

Apr 12, 2018

we just take L.C.M and use the formula

(a+b) (a-b)=(a²-b²)

after that the brackets are opened and it is simplified by cancelling like terms with opposite signs.