How do you find the product of #(y^2-1)/(y^2-49)*(y-7)/(y+1)#?
2 Answers
Explanation:
difference of two squares rule:
in the same way:
cancel out fractions:
Explanation:
We need to remember two things here. First, for
and
Then, we must know how to spot and factor a difference of squares:
Using this relationship, the first fraction is converted to:
Then, multiply that with the other fraction:
Of course, we have the restrictions
Remember these two things to help you spot and factor a difference of squares:
1) See if you can transform the terms into squares, for example:
etc.
2) Remember that
etc.