document.write( "Question 286471: b is a point between ac if ab=6x and bc=x^2 and ac=27 find x \n" ); document.write( "
Algebra.Com's Answer #207769 by jim_thompson5910(35256)\"\" \"About 
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Since b is somewhere on ac, this means that \"ab%2Bbc=ac\" by the segment addition postulate (ie the parts of a line segment add up to the total line segment)\r
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\n" ); document.write( "\n" ); document.write( "So \"6x%2Bx%5E2=27\" which then becomes \"x%5E2%2B6x-27=0\". Factor to get \"%28x%2B9%29%28x-3%29=0\". Now use the zero product property and solve to get \"x=-9\" or \"x=3\"\r
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\n" ); document.write( "\n" ); document.write( "Since we're dealing with lengths, the only sensible answer is \"x=3\"
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