document.write( "Question 647111: B is the midpoint of line AC. Find the value of x and the length of line AB.\r
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document.write( "AB= 3x^2-12
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document.write( "BC= 3x \n" );
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Algebra.Com's Answer #406004 by opeodu(24)![]() ![]() You can put this solution on YOUR website! AB=BC 3x^2-12=3x x^2-4-3x=0 x^2-3x-4=0 x^2-4x+x-4=0 x[x-4]+1[x-4]=0 x+1=0 or x-4=0 x=-1 or 4 \n" ); document.write( " |