1.

Factorise : 1 – 121x2​

Answer»

(1 + 11X) (1 - 11x) Step-by-step EXPLANATION:IDENTITY – a² - b² = (a+b)(a-b)1 - 121x²= (1)² - (11x)²= (1 + 11x) (1 - 11x)



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