SOLUTION: Please help factor by grouping: p^2 - q^2 + r^2 - 2pr This is straight from book. Thanks for showing steps.

Question 385283: Please help factor by grouping:
p^2 - q^2 + r^2 - 2pr
This is straight from book.
Thanks for showing steps.
Found 2 solutions by mananth, jim_thompson5910:
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!

..
reorganize the terms

...

...

...
m.ananth@hotmail.ca

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression.

Rearrange the terms.

Factor to get

Now use the difference of squares formula to factor.

So factors to

In other words,
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