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Simplify the radical expression. HELP PLEASE!!!!!! (3 + √6) (3 -√6) a) -27 b) 3 c) 9+6√6 d) 15+6√6
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Simplify the radical expression. HELP PLEASE!!!!!!

(3 + √6) (3 -√6)

a) -27

b) 3

c) 9+6√6

d) 15+6√6

User IdFlood
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1 Answer

4 votes
(a+b)(a-b)=a²-b²
In this case:
(3)²-(√6)²=9-6=3

Answer: b) 3
User Florian Boudot
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