document.write( "Question 228369: (5x-1)(3x+7) \n" ); document.write( "
Algebra.Com's Answer #169538 by rapaljer(4671)\"\" \"About 
You can put this solution on YOUR website!
There are a couple of ways to multiply the product of two binomials like this. I recommend something called F O I L. \r
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\n" ); document.write( "\n" ); document.write( "(5x-1)(3x+7)\r
\n" ); document.write( "\n" ); document.write( "F=5x*3x= 15x^2
\n" ); document.write( "O=5x*7=35x
\n" ); document.write( "I=-1*3x=-3x
\n" ); document.write( "L=-1*7=-7\r
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\n" ); document.write( "\n" ); document.write( "Add together:
\n" ); document.write( "15x^2 + 35x - 3x - 7
\n" ); document.write( "15x^2 + 32x - 7\r
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\n" ); document.write( "\n" ); document.write( "Dr. Robert J. Rapalje, Retired
\n" ); document.write( "Seminole State College
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