Reduction of Quadratic form to canonical form

[@mathsmax5702]

CORECTION - AT 9:14 s2 = 36. (since the minor matrix of diagonal element 5 is |3 1| )
1 3

[@abinayakannan307]

Sir s2 in 36

[@thagadurchannel6058]

Its wrong... S2

[@AnishSharma028]

Worst explanation..... U r not even saying that from where u wrote the equations of x y z after putting values of lambda