p²by 9 factorise using identies

those who answer this I will make you as brainist ​

1 thought on “p²by 9 factorise using identies<br /><br />those who answer this I will make you as brainist ​”

1. Factorization using identities

   (a + b )2 = a2 + 2ab + b2

   (a – b )2 = a2 – 2ab + b2

   (a + b )(a – b) = a2 – b2

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