Multiplying Messier Radicals 3

YOUR TURN:

Here's another one -- and something cool is going to happen:

( 5 + sqrt(2) )( 5 - sqrt(2) ) = ( 5 )( 5 ) - 5*sqrt(2) + 5*sqrt(2) - ( sqrt(2) )( sqrt(2) ) = 25 - sqrt(4) = 25 - 2 = 23

No radicals in the answer!

TRY IT:

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