document.write( "Question 899217: 5xy +10x +10y +20\r
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Algebra.Com's Answer #545288 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "The word is NOT \"solve\".  You can only 'solve' equations.\r\n" );
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document.write( "How to tell if it's an equation or an expression: If it has an equal\r\n" );
document.write( "sign \" = \" then it is an equation and you can use the word \"solve\".  But\r\n" );
document.write( "if there is no equal sign then you can't use the word \"solve\".  In your\r\n" );
document.write( "case the word is \"factor\" if you live in the US, or if you live in the UK,\r\n" );
document.write( "the word is \"factorise\".\r\n" );
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document.write( "5xy+10x+10y+20\r\n" );
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document.write( "Take factor 5 out of the entire expression:\r\n" );
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document.write( "5[xy+2x+2y+4]\r\n" );
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document.write( "Use brackets [] instead of parentheses () so you can insert parentheses\r\n" );
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document.write( "Out of only the first two terms inside the bracket factor out x:\r\n" );
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document.write( "5[x(y+2)+2y+4]\r\n" );
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document.write( "Out of the last two terms inside the bracket factor out +2.\r\n" );
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document.write( "5[x(y+2)+2(y+2)]\r\n" );
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document.write( "Now there are two terms inside the bracket so take (y+2) out of each.\r\n" );
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document.write( "5[(y+2)(x+2)]\r\n" );
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document.write( "Now you can drop the brackets:\r\n" );
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document.write( "5(y+2)(x+2)\r\n" );
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document.write( "Edwin
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