SOLUTION: x^2-5x+4 -------- x^2-1 times x^2+5x+4 -------- x^2-9 hi i need to simplify this and list any restrictions that there are. please helppp. thank you so much.

Question 178842: x^2-5x+4
--------
x^2-1
times
x^2+5x+4
--------
x^2-9

hi i need to simplify this and list any restrictions that there are.
please helppp.
thank you so much.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given expression.

Factor to get .

Factor to get .

Factor to get .

Factor to get .

Combine the fractions.

Highlight the common terms.

Cancel out the common terms.

Simplify.

FOIL

So simplifies to .

In other words, where , , , or (these are the restrictions)

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