document.write( "Question 97426This question is from textbook College Algebra
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document.write( ": The problem is -4x^2+8x=0. So far I've done -4x^2+8x+7=0, 4x^2-8x-7=0 then I squared half of the coefficient of x and added to both sides and got 4x^2-8x+16=9 but I can't figure out how to get a perfect square. Did I do something wrong in the first steps? \n" );
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Algebra.Com's Answer #70893 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! -4x^2+8x=0 \n" ); document.write( "Factor: \n" ); document.write( "= -4x(x-2)=0 \n" ); document.write( "-4x=0 or x-2=0 \n" ); document.write( "x = 0 or x=2 \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |