1.

Simplify using identities :99 square​

Answer»

Step-by-step explanation:

, the question is (99)²,

...

Answer :

(a + b)² = a² + b² + 2ab.

(a - b)² = a² + b² - 2ab.

(a² - b²) = (a + b) (a - b)

(X + a) (x +b) = x² + (a + b)x + AB.



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