4. Expand each of the following, using suitable identities: (ii) (2x−y+z)^2 4. Expand each of the following using suitable identities: (ii) (2x−y+z)^2 October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related 85. Expand the following, using suitable identities. (x) (2x – 5y) (2x – 5y)85. Expand the following, using suitable identities. (vii) (2x + 9) (2x – 7)85. Expand the following, using suitable identities. (ix) (2x/3 - 2/3) (2x/3 + 2a/3)