document.write( "Question 1209167: The roots of the quadratic equation z^2 + bz + c = 0 are 5 + 3i and -2 + 7i. What is b + c? \n" ); document.write( "

Algebra.Com's Answer #847753 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "HINT:  Apply the Vieta's theorem (formulas).\r\n" );
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document.write( "       Coefficient  \"b\"  at  z  is the sum of the roots with the opposite sign.\r\n" );
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document.write( "       Coefficient  \"c\"  (the constant term) is the product of the roots.\r\n" );
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