Упростите выражение \(\dfrac{x}{x^2-y^2}-\dfrac{1}{x+y}\)

• \(\dfrac{y}{x^2-y^2}\)
• \(-\dfrac{y}{x^2-y^2}\)
• \(\dfrac{2x-y}{x^2-y^2}\)
• \(\dfrac{2x}{x^2-y^2}\)