SOLUTION: Is there anyone who can help with this problem √10a+7√90a^3

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Question 600608: Is there anyone who can help with this problem
√10a+7√90a^3
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%2810a%29%2B7%2Asqrt%2890a%5E3%29

sqrt%2810a%29%2B7%2Asqrt%289%2A10%2Aa%5E2%2Aa%29

sqrt%2810a%29%2B7%2Asqrt%289%29%2Asqrt%2810%29%2Asqrt%28a%5E2%29%2Asqrt%28a%29

sqrt%2810a%29%2B7%2A3%2Asqrt%2810%29%2Aa%2Asqrt%28a%29

sqrt%2810a%29%2B21a%2Asqrt%2810a%29

%281%2B21a%29sqrt%2810a%29


So sqrt%2810a%29%2B7%2Asqrt%2890a%5E3%29 simplifies to %281%2B21a%29sqrt%2810a%29