Sagot :
2y - 1/2y
= 4y^2/2y - 1/2y (same denominator)
= (4y^2 - 1) / 2y
= (2y + 1) (2y - 1) / 2y (simplified)
= 4y^2/2y - 1/2y (same denominator)
= (4y^2 - 1) / 2y
= (2y + 1) (2y - 1) / 2y (simplified)