SOLUTION: multiply (5sqrt3 - 15sqrt7)(2sqrt3 +6sqrt7)= Thank you for your help!

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Question 144603: multiply
(5sqrt3 - 15sqrt7)(2sqrt3 +6sqrt7)=
Thank you for your help!
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
5sqrt3 - 15sqrt7
2sqrt3 +6sqrt7
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10*3-30sqrt21+30sqrt21-90*7
30-630=-600 answer.