Calculations based on a plus b minus c whole square (a +b -c )^2

a plus b minus c whole square (a+b-c)2

(a + b - c)2 = a2 + b2 + c2 +2ab - 2bc -2ac

let value of a=2 b =3 c = 4 

(a+b-c)2 = (2+3-4)2 = 1 =LHS

a2 +b2 +c2 + 2ab -2bc - 2ac = 22 + 32 + 42 + 2.2.3 - 2.3.4 - 2.2.4

                                              = 4 + 9 +16 +12 - 24 - 16 

                                              =1 =RHS

Hence RHS = LHS

Posted on by
Score
Views