SOLUTION: I have a question on a math problem and also trying to find the best calculator for algebra problems? I am trying to solve this 5times sqrt(80)+ sqrt(45) and the answer has to be i

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Question 433914: I have a question on a math problem and also trying to find the best calculator for algebra problems? I am trying to solve this 5times sqrt(80)+ sqrt(45) and the answer has to be in a radical form and not in decimal form.
Answer by Sarpi(32) About Me  (Show Source):
You can put this solution on YOUR website!
Alright; 5sqrt%2880%29%2Bsqrt%2845%29
Solving without the help of calculator will be as follows;
5sqrt%2816%2A5%29%2Bsqrt%289%2A5%29 that is you find a common factor for both terms, here it is 5. (5*16=80 and 5*9=45).
So we continue as follows;
5sqrt%2816%2A5%29%2Bsqrt%289%2A5%29
%285%2A4%29sqrt%285%29%2B3sqrt%285%29 that is sqrt%2816%29=4 and sqrt%289%29=3
20sqrt%285%29%2B3sqrt%285%29 since the equation has two identical square root of 5, we can therefore add them together, which will give 23sqrt%285%29
Hence, the solution of 5sqrt%2880%29%2Bsqrt%2845%29 in a radical form is 23sqrt%285%29.