Question

Simplify (2√3+√5)(2√3-√5)

Answer 1

Answer:

$(2 \sqrt{3} + \sqrt{5} )(2 \sqrt{3} - \sqrt{5} ) \\ \\ = ({2 \sqrt{3} })^{2} - ({ \sqrt{5} })^{2} = 12 - 5 = 7$

Answer 2

Step-by-step explanation:

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