document.write( "Question 22728: please factor the following
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\n" ); document.write( "\n" ); document.write( "b^2 + 7b - 8 =
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Algebra.Com's Answer #11112 by longjonsilver(2297)\"\" \"About 
You can put this solution on YOUR website!
you need 2 numbers that multiply to give 8 and then add/subtract to give 7\r
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\n" ); document.write( "\n" ); document.write( "Possible pairings are: 8x1 and 4x2\r
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\n" ); document.write( "\n" ); document.write( "which pair can add/subtract to give 7? answer is 8 and 1...so, we have (b 8)(b 1)\r
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\n" ); document.write( "\n" ); document.write( "Now, we need to figure out the signs:\r
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\n" ); document.write( "\n" ); document.write( "They multiply to give -8, so 2 possibilities are either (+8 and -1) OR (-8 and +1)\r
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\n" ); document.write( "\n" ); document.write( "These have to combine to give +7: only one that does that is +8 and -1... so the answer is (b+8)(b-1)\r
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