Find an equation of the slant asymptote. Do not sketch

Find an equation of the slant asymptote. Do not sketch the curve.


2x + x? + x + 3 56. y = x + 2x 5x4 + x2 + x 58. y = x - x? + 2 x? + 1 55. y = = x +1 4x - 2x? + 5 57. y= 2x +x - 3