Question

x⁴-x²y+3y²
-x⁴+2xy+y²​

Answer 1

Answer:

(x⁴-x²y + 3y²) - ( x⁴ + 2xy + y²)

- x⁴-x²y+ 2xy 4y²

Answer 2

$x^4 - x^2y + 3y^2 - x^4 + 2xy + y^2\\\\x^4 - x^4 + 3y^2 + y^2 - x^2y + 2xy\\\\4y^2 - x^2y + 2xy$

hope it helps !!