80. The value of (a + 1) (a – 1) (a^2 + 1) is a^4 – 1. 80. The value of (a + 1) (a – 1) (a^2 + 1) is a^4 – 1. July 21, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related