write the product of [2s-1] [2s+1]
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2
Answer:
4s^2+2s-2s
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(2s-1) (2s+1)
*(a+b)(a-b) =a square -b square
=(2s)square -(1)square
=4s square -1 ans
*(a+b)(a-b) =a square -b square
=(2s)square -(1)square
=4s square -1 ans
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