SOLUTION: please help me to understand how to do this {{{(y^2-y-42)/(14+5y-y^2)}}}

Question 16519: please help me to understand how to do this

Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
It helps if you know something about factoring trinomial expressions.
Let's start with the numerator and factor that.

Now the denominator.
Now back to the problem only we'll the factored forms.
It's a little hard to see what will cancel so we'll rewrite the denominator.
Cancel the (y - 7)'s

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