SOLUTION: How do I subtract this: 16a^2-49b^2=

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Question 675888: How do I subtract this:
16a^2-49b^2=

Answer by ReadingBoosters(3246)   (Show Source): You can put this solution on YOUR website!
You cannot subtract because the variable are different

...
It can be factored though,
(4a+7b)(4a-7b)
.....................
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