document.write( "Question 425483: Three times the square of a certain positive number exceeds six times the number by nine. Fine the number: \n" ); document.write( "

Algebra.Com's Answer #296263 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Three times the square of a certain positive number exceeds six times the number by nine.
\n" ); document.write( "Find the number:
\n" ); document.write( ":
\n" ); document.write( "3x^2 = 6x + 9
\n" ); document.write( "3x^2 - 6x - 9 = 0
\n" ); document.write( "simplify, divide by 3, resulting in:
\n" ); document.write( "x^2 - 2x - 3 = 0
\n" ); document.write( "Factors to
\n" ); document.write( "(x-3)(x+1)
\n" ); document.write( "Two solutions
\n" ); document.write( "x = 3
\n" ); document.write( "x = -1
\n" ); document.write( ":
\n" ); document.write( "You can check both solution in original equation \n" ); document.write( "

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