document.write( "Question 443650: use quadratic formula
\n" ); document.write( "4/5y^2+1/5y=18/5 \n" ); document.write( "
Algebra.Com's Answer #305951 by mananth(16946)\"\" \"About 
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\"%284%2F5%29y%5E2%2B%281%2F5%29y=18%2F5\"\r
\n" ); document.write( "\n" ); document.write( "\"%284%2F5%29y%5E2%2B%281%2F5%29y-18%2F5=0\"\r
\n" ); document.write( "\n" ); document.write( "multiply by 5
\n" ); document.write( "we get 4y^2+y-18=0\r
\n" ); document.write( "\n" ); document.write( "a= 4 b= 1 c= -18
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\n" ); document.write( "b^2-4ac=1+288
\n" ); document.write( "b^2-4ac=289
\n" ); document.write( "sqrt(289)= 17
\n" ); document.write( "\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"
\n" ); document.write( "\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"
\n" ); document.write( "x1=(-1+17)/8
\n" ); document.write( "x1=2
\n" ); document.write( "x2=(-1-17)/8
\n" ); document.write( "x2= -2.25
\n" ); document.write( " \n" ); document.write( "
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