Help, Multiplying binomial radicals

I've looked through dozens and dozens of questions, and I can't find an example with this format where both numbers in both sides are under the radical sign, and no numbers to the left, please help. (sqrt 3+4)(sqrt 3-7) The answer is 25-3-sqrt3 how do I get there??

Re: Help, Multiplying binomial radicals

What happens when you multiply through using the pattern ?

Re: Help, Multiplying binomial radicals

Hello, drmattthew!

Multiply as usual ("FOIL") . . . and simplify carefully.

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