document.write( "Question 1018929: Eight less than 9 time a number is the same as the square of the number. Find the number. \n" ); document.write( "

Algebra.Com's Answer #634934 by ikleyn(52790) $\"\"$ $\"About$

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\n" ); document.write( "Eight less than 9 time a number is the same as the square of the number. Find the number.
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document.write( "Your equation is \r\n" );
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document.write( " = .    (1)\r\n" );
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document.write( "Simplify and solve it:\r\n" );
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document.write( " = \r\n" );
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document.write( "Factor left side:\r\n" );
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document.write( "(x-1)*(x-8) = 0,\r\n" );
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document.write( "The roots qre x = 1 and/or x = 8.\r\n" );
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document.write( "Check. x = 1:  9x - 8 = 1.   = 1.  Equality (1) is valid.\r\n" );
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document.write( "        x = 8:  9x - 8 = 64.   = 64.  Equality (1) is valid.\r\n" );
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document.write( "Answer. The number is 1 or 8.\r\n" );
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