Using horizontal method: (i) Add x2 + y2 - 2ху, - 2x2 - у2 - 2xy and 3x2 + y2 + xy

Using horizontal method: (i) Add x2 + y2 - 2ху, -2x2 - у2, - 2xy and 3x2 + y2 + xy (ii) Subtract - x2 + y2 + 2xy from 2x2 - 3y2 #mathematics #algebra #7thclass #horizontal #7thmaths #maths #add #math #subtract #algebraicexpressions #oneandonlymathematics