is the last step important to write in the following answer
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yes why not its easy only identity is used
angela10:
i have only asked whether it is important or not
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yes, we are finding all factors
using the formula
a²-b² = (a+b)(a-b)
using the formula
a²-b² = (a+b)(a-b)
listen....
I'm asking that last one
we are saying about the last one only
it is important
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