SOLUTION: Factor: #14.) a^4(to the fourth)-196 #19.) 400-u^2v^4 ASAP!!

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Question 403300: Factor:
#14.) a^4(to the fourth)-196
#19.) 400-u^2v^4
ASAP!!
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Factor:
#14.) a^4(to the fourth)-196
It's the difference of 2 squares.
The factors are the sum and difference of the 2 squared elements.
x%5E2+-+y%5E2+=+%28x%2By%29%2A%28x-y%29
-----------------------
= %28a%5E2%29%5E2+-+14%5E2
= %28a%5E2+%2B14%29%2A%28a%5E2+-+14%29
------------------------------
#19.) 400-u^2v^4
Same as above.