document.write( "Question 1117423: Write a quadratic function f whose zeros are 1 and −9
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Algebra.Com's Answer #732496 by ikleyn(52784) $\"\"$ $\"About$

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document.write( "The simplest such function is  \r\n" );
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document.write( "    f(x) = (x-1)*(x-(-9)),             (1)\r\n" );
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document.write( "the product of two binomials  (x-1)  and  (x-(-1)), associated with the roots.\r\n" );
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document.write( "Right side (1) can be simplified\r\n" );
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document.write( "    f(x) = (x-1)*(x+9).                (2)\r\n" );
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