How do you FOIL (√3 + 2) (√3 + 1)(√3+2)(√3+1)?

1 Answer
Lorenzo D.
May 24, 2015

every time you have to foil something like this: (a+b)(c+d)(a+b)(c+d) the solution is this: (ac)+(ad)+(bc)+(bd)(ac)+(ad)+(bc)+(bd)
in this case the solution is (root()3*root()3)+(root()3*1)+(2*root()3)+(2*1)=3+root()3+2root()3+2=5+3root()3 (√3⋅√3)+(√3⋅1)+(2⋅√3)+(2⋅1)=3+√3+2√3+2=5+3√3

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