document.write( "Question 443579: Solve each equation....\r
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document.write( "(B) x(5x+1)=18 (C) (x-8)(x+6)=15 \n" );
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Algebra.Com's Answer #305931 by edjones(8007)![]() ![]() You can put this solution on YOUR website! (B) \n" ); document.write( "x(5x+1)=18 \n" ); document.write( "5x^2+x-18=0 \n" ); document.write( "5*-18=-90; 10 and -9 are the two factors of -90 whose sum is 1. \n" ); document.write( "5x^2+10x-9x-18=0 \n" ); document.write( "5x(x+2)-9(x+2)=0 \n" ); document.write( "(5x-9)(x+2)=0 \n" ); document.write( "x=-2, x=9/5 \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |