31 square - 29 square. Use the appropriate identity.
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31 square - 29 square
using identity a square - b square = (a+b)(a-b)
(31+29)(31-29)
60×2
120 -> Answer
using identity a square - b square = (a+b)(a-b)
(31+29)(31-29)
60×2
120 -> Answer
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