SOLUTION: factor completely 4r^2 - 121

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Question 433517: factor completely
4r^2 - 121
Answer by belle3833(46) About Me  (Show Source):
You can put this solution on YOUR website!
This is a difference of 2 squares:
k%5E2a%5E2-h%5E2b%5E2%29=%28ka-hb%29%28ka%2Bhb%29
4r%5E2-121=%282r%2B11%29%282r-11%29
Hope this helps