4. Expand each of the following, using suitable identities: (iv) (3a –7b–c)^2 4. Expand each of the following using suitable identities: (iv) (3a –7b–c)^2 October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related