document.write( "Question 359540: When asked to solve the equation (x + 3)(2x - 1) = 5 a student proceeded as follows:
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document.write( "x+3=5 or 2x-1=5\r
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document.write( "x=2 or x=3\r
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document.write( "Describe, in your own words, what this student did wrong and what he/she should have
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Algebra.Com's Answer #256532 by mananth(16946)![]() ![]() You can put this solution on YOUR website! You cannot use the zero product rule unless the product is zero.\r \n" ); document.write( "\n" ); document.write( "(x+3)(2x +1)=5 \n" ); document.write( "2x² +7x +3 = 5 \n" ); document.write( "2x² + 7x - 2 = 0 \n" ); document.write( "use quadratic formula \n" ); document.write( "x = [-7 ± √(49 - 16)]/4 = (-7±√33)/4\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |