document.write( "Question 417363: Hi can you please help me figure this out. I am not sure if I am doing this right.
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document.write( "I am trying to decide if the given number is a solution to the given equation.\r
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document.write( "5x^2 405; -9\r
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document.write( "and if \r
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document.write( "3x + 7 = 21; 4\r
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document.write( "I am thinking yes to both but I how do I know for sure.\r
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document.write( "Thanks for all your help :o) \n" );
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Algebra.Com's Answer #292181 by mananth(16946) You can put this solution on YOUR website! 5x^2=408 \n" ); document.write( "x^2=81 \n" ); document.write( "x= +/- 9 \n" ); document.write( "... \n" ); document.write( "3x+7=21 \n" ); document.write( "3x=21-7 \n" ); document.write( "3x=14 \n" ); document.write( "/3 \n" ); document.write( "x=14/3 \n" ); document.write( "4 not a solution \n" ); document.write( " |