Question

if A=2y²+3x-x²,B=2x²-3y²,C=3x²-5xy find A+B+C​

Answer 1

$(2 {y}^{2} + 3x - {x}^{2} ) +( 2 {x}^{2} - 3 {y}^{2} ) + (3 {x}^{2} - 5xy) \\ 2 {y}^{2} - 3 {y}^{2} + 2 {x}^{2} - {x}^{2} + 3 x - 5xy \\ - y {}^{2} + x {}^{2} + 3x - 5xy$