document.write( "Question 321332: I need help with the following word problem:
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document.write( "The sum of a positive number and its square is 210. find the number.\r
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document.write( "thank you! \n" );
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Algebra.Com's Answer #230147 by mananth(16946)![]() ![]() You can put this solution on YOUR website! let the number be x \n" ); document.write( "square of the number will be x^2 \n" ); document.write( ".. \n" ); document.write( "x^2+x=210 \n" ); document.write( "x^2+x-210=0 \n" ); document.write( "x^2+16x-15x-210=0 \n" ); document.write( "x(x+16)-15(x+16)=0 \n" ); document.write( "(x+16)(x-15)=0 \n" ); document.write( "x= -16 OR 15 \n" ); document.write( "x=15 \n" ); document.write( " |