document.write( "Question 115568: solve equation.
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document.write( "x^2-14x=0 \n" );
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Algebra.Com's Answer #84117 by bucky(2189)![]() ![]() ![]() You can put this solution on YOUR website! Probably the easiest way to solve this equation is by factoring. Since both terms on the left \n" ); document.write( "side contain an x, you can factor out an x to give: \n" ); document.write( ". \n" ); document.write( "x*(x - 14) = 0 \n" ); document.write( ". \n" ); document.write( "This equation will be true if either of the factors on the left side are zero because a \n" ); document.write( "multiplication by zero on the left side will make the left side equal the zero on the right side. \n" ); document.write( ". \n" ); document.write( "So we can get the two answers by setting each of the factors equal to zero. \n" ); document.write( ". \n" ); document.write( "For the first factor equal to zero we have: \n" ); document.write( ". \n" ); document.write( "x = 0 and that is one answer. \n" ); document.write( ". \n" ); document.write( "For the second factor equal to zero we have: \n" ); document.write( ". \n" ); document.write( "x - 14 = 0 \n" ); document.write( ". \n" ); document.write( "And if we add 14 to both sides we get: \n" ); document.write( ". \n" ); document.write( "x = 14 and that is the second answer. \n" ); document.write( ". \n" ); document.write( "Check ... go to the original equation x^2 - 14x = 0 and substitute 0 for x. The result is: \n" ); document.write( ". \n" ); document.write( "0 - 0 = 0 \n" ); document.write( ". \n" ); document.write( "and that is a correct equation, so the answer x = 0 checks. \n" ); document.write( ". \n" ); document.write( "Return to the original equation x^2 - 14x = 0 and substitute 14 for x. When you do you get: \n" ); document.write( ". \n" ); document.write( "14^2 - 14*14 = 0 \n" ); document.write( ". \n" ); document.write( "and since 14^2 = 14*14 the equation becomes: \n" ); document.write( ". \n" ); document.write( "14*14 - 14*14 = 0 \n" ); document.write( ". \n" ); document.write( "This also is a correct equation so the answer x = 14 checks. \n" ); document.write( ". \n" ); document.write( "Hope this helps you to understand the problem. \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( " |