document.write( "Question 1165881: Write a quadratic function f whose zeros are -11 and 3. \n" ); document.write( "

Algebra.Com's Answer #790349 by Edwin McCravy(20055) $\"\"$ $\"About$

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Write a quadratic function f whose zeros are -11 and 3.
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document.write( "          x = -11;     x = 3\r\n" );
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document.write( "Get 0 on the right of each\r\n" );
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document.write( "     x + 11 = 0;   x - 3 = 0     \r\n" );
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document.write( "Multiply the left sides together and set it equal to the right sides\r\n" );
document.write( "multiplied together:\r\n" );
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document.write( "       (x + 11)(x - 3) = 0\r\n" );
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document.write( "     x² - 3x + 11x - 33 = 0 \r\n" );
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document.write( "           x² + 8x - 33 = 0\r\n" );
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document.write( "So a quadratic function which when set equal to zero has solutions -11 and 3\r\n" );
document.write( "is this function f:\r\n" );
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document.write( "    f(x) = x² + 8x - 33\r\n" );
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document.write( "Edwin

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