92. Factorise the following using the identity a^2 – b^2 = (a + b) (a – b). (xxii) 16x^4 – 81 92. Factorise the following using the identity a^2 – b^2 = (a + b) (a – b). (xxii) 16x^4 – 81 July 27, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic [...]