Question

(a-2b-3c) whole square

Answer 1

(a-b-c)whole square= a square+b square+c square-2ab+2bc-2ca
A.C.Q
(a-2b-3c)whole square=a square+4b square+9c square-2(a*2b)+2(2b*3c)-2(3c*a)
                                    =a square+4b square+9c square-4a+12bc-6ac