Question

add y^{2}-x^{2},2x^{2}-3y^{2},5y^{2}-3x^{2},6x^{2}+2y^{2}​

Answer 1

${y}^{2} - {x}^{2} + 2 {x}^{2} - 3 {y}^{2} + 5 {y}^{2} - 3 {x}^{2} + 6 {x}^{2} + 2y {}^{2}$

$5 {y}^{2} + 4 {x}^{2}$

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