document.write( "Question 937768: I do my home work on khanacademy.org and I am doing Pythagorean Theorem. It keeps giving me problems that show a right triangle with two side lengths and I have to find the third length and answer it like this, for example: \"+2%2Asqrt%2813%29+\" It shows me how I got it wrong but I don't understand how they get the answer so they gave me a triangle that has one leg as \"a\", another as 5, and the hypotenuse as 9. I put it into an equation of \"+a%5E2+%2B+25+=+81+\" and then subtracted 25 from both sides and got \"+a+=+sqrt+%2856%29+\" and then I did the factor tree with the square root of 56 and had 2 * 24 and then from 24 I had 2 * 12 and then from 12 I had 2 * 6 and from 6 I had 3 * 2. After that I put the answer in as \"+2%2Asqrt+%2824%29+\" but it said it was wrong and told me the answer was \"+2%2A+sqrt%2814%29+\" but I don't understand how they got that and also why that is the answer. Please help me understand and thank you for your using your time to help me. \n" ); document.write( "
Algebra.Com's Answer #571185 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "\"+a%5E2+%2B+25+=+81+\"\r
\n" ); document.write( "\n" ); document.write( "\"+a%5E2+=+81-25+\"\r
\n" ); document.write( "\n" ); document.write( "\"+a%5E2+=+56+\"\r
\n" ); document.write( "\n" ); document.write( "\"+a+=sqrt%28+56%29+\" ............\"56=4%2A14=2%5E2%2A14\"\r
\n" ); document.write( "\n" ); document.write( "\"+a+=sqrt%28+2%5E2%2A14%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"+a+=sqrt%28+2%5E2%29sqrt%2814%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"+a+=2sqrt%2814%29+\"
\n" ); document.write( "
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