Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form.

Question

Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form.

 

y/y^2-y-20  + 2/y+4

Answer 1

Hint:

 

       y               2

------------- + --------

y² - y - 20      y + 4

 

              y                    2

= ------------------ + ---------

     (y + 4)(y - 5)       y + 4

 

               y                    2(y - 5)

= ------------------- + ------------------

     (y + 4)(y - 5)        (y + 4)(y - 5)

 

= ........

 

Hope you can finish the rest of the calculations.