what is (a+b+c)whole square Share with your friends Share 129 Ankush Jain answered this (a+b+c)2 = (a+b)2 + c2 + 2c(a+b)⇒ (a+b+c)2 = a2+b2+2ab+c2+2ac+2bc = a2+b2+c2+2ab+2ac+2bc 289 View Full Answer