Math

Factorize:
a^2 -1 + 2b - b^2

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  1. a2+1+b2-2b

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  2. a2+b2(-1+2)b

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  3. a^2 -1 + 2b - b^2
    = a^2 - (b^2 - 2b + 1)
    = a^2 - (b-1)^2 , now we have a difference of squares
    = (a + (b-1))(a - (b-1))
    = (a+b-1)(a-b+1)

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  4. This is very useful for me.
    Thanks ⭐️⭐️

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  5. ᴛʜɪꜱ ɪꜱ ᴠᴇʀy ᴜꜱᴇꜰᴜʟ ꜰᴏʀ ᴍᴇ.
    ᴛʜᴀɴᴋᴜ⭐

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