Question

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Answer 1

Answer:

the answer is below

Step-by-step explanation:

(6+√5)(6-√5

=>6^(2) - √5^(2)

=>36-5

=>31

(4+√5)(√3-√7)

4(√3-√7)+√5(√3-√7)

4√3-4√7+√15-√35

hope this helps