Respuesta :

Answer:

4y²-1/4 is the required answer

Step-by-step explanation:

[tex](2y - \frac{1 }{2} )(2y + \frac{1}{2} ) \\ using \: formula \: {x}^{2} - y {}^{2} = (x - y)(x + y) \\ 4y {}^{2} - \frac{1}{4} [/tex]