9. Prove that (a +b +c)^3 -a^3 -b^3 – c^3 =3(a +b)(b +c)(c +a). 9. Prove that (a +b +c)^3 -a^3 -b^3 – c^3 =3(a +b)(b +c)(c +a). June 28, 2021 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
