Question

1) у^2-х^2/2х-2у=
2) 2✔️2+✔️50-✔️98=

Answer 1

1) $\frac{y^{2}-x^{2}}{2x-2y} = \frac{(y-x)(y+x)}{-2(-x+y)} = \frac{y+x}{-2} = -\frac{y+x}{2}$

2) $2\sqrt{2} + \sqrt{50} + \sqrt{98} = 2\sqrt{2} + 5\sqrt{2} + 7\sqrt{2} = 14\sqrt{2}$