Answer :

zutzut

Answer:

4x-4y

Step-by-step explanation:

1. simplify radical

[tex](2\sqrt{x} +\sqrt{4y} )(2\sqrt{x}-2\sqrt{y} )[/tex]

[tex](2\sqrt{x} +2\sqrt{y} )(2\sqrt{x}-2\sqrt{y} )[/tex]

2. using (a-b)(a+b)=[tex]a^{2} -b^{2}[/tex] simplify product

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