document.write( "Question 389334: 1. It takes Bill 6 hours longer than John to plow a certain field. Together they can plow it in 4 hours. How long would it take each man alone to plow the field?\r
\n" ); document.write( "\n" ); document.write( "2. Using a graphing calculator find the roots of the equation to the nearest hundredth:
\n" ); document.write( "x^7+x^5-2x^3+3x^2-1=0
\n" ); document.write( "

Algebra.Com's Answer #482256 by Finavon(81)\"\" \"About 
You can put this solution on YOUR website!
John t hrs
\n" ); document.write( "Bill (t+6) hrs
\n" ); document.write( "Together 4 hrs
\n" ); document.write( "Each contribute to this whole
\n" ); document.write( "\"4%2Ft+%2B+4%2F%28%28t%2B6%29%29+=+1\"
\n" ); document.write( "Multiply each side by t and by t+6
\n" ); document.write( " 4(t+6) + 4t = t(t+6)
\n" ); document.write( "4t + 24 + 4t = t^2 + 6t
\n" ); document.write( "Rearrange
\n" ); document.write( "\"+t%5E2+-+2t+-+24+=+0\"
\n" ); document.write( "Solves as (t+4)(t-6) with t=6 as only real solution
\n" ); document.write( "John takes 6 hrs; Bill takes 12 hrs
\n" ); document.write( "Check: \"4%2F6+%2B+4%2F%28%286%2B6%29%29+=+2%2F3+%2B+1%2F3+=+1\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "2. Using a graphing calculator find the roots of the equation to the nearest hundredth:
\n" ); document.write( "x^7+x^5-2x^3+3x^2-1=0
\n" ); document.write( "
\n" );