document.write( "Question 48519: I need help with this. I don't know where to begin.
\n" ); document.write( "Factor: -1x^2+6xy+9y^2 \n" ); document.write( "
Algebra.Com's Answer #32117 by cowess(34)\"\" \"About 
You can put this solution on YOUR website!
Two ways of doing this, I think the second one will do better.
\n" ); document.write( "First way:
\n" ); document.write( "a trigonomial can be written like ax^2+bx+c
\n" ); document.write( "f(x)=-1x^2+6xy+9y^2
\n" ); document.write( "a=-1
\n" ); document.write( "b=6y
\n" ); document.write( "c=9y^2
\n" ); document.write( "if f(x)=0
\n" ); document.write( "\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a\"
\n" ); document.write( "\"x=3y%281%2B-sqrt%282%29%29\"
\n" ); document.write( "\"f%28x%29=-%28x-3y%281%2Bsqrt%282%29%29%29%28x-3y%281-sqrt%282%29%29%29\"
\n" ); document.write( "Second way:
\n" ); document.write( "\"f%28x%29=-1x%5E2%2B6xy%2B9y%5E2\"
\n" ); document.write( "=\"18y%5E2-%28x%5E2-6xy%2B9y%5E2%29\"
\n" ); document.write( "=\"%28%283sqrt%282%29%29y-%28x-3y%29%29%28%283sqrt%282%29%29y%2B%28x-3y%29%29\"
\n" ); document.write( "=\"%28%283sqrt%282%29%29y-%28x-3y%29%29%28%283sqrt%282%29%29y%2B%28x-3y%29%29\"
\n" ); document.write( "=\"%283y%28sqrt%282%29%2B1%29-x%29%283y%28sqrt%282%29-1%29%2Bx%29\" \n" ); document.write( "
\n" );