document.write( "Question 764515: What is the lowest-degree polynomial with integer coefficients and the roots 6, i, and –i?\r
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document.write( "A. x^3 + 6x^2 + x + 6
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document.write( "B. x^3 + 6x^2 − x − 6
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document.write( "C. x^3 − 6x^2 + x − 6
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document.write( "D. x^3 − 6x^2 − x + 6 \n" );
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Algebra.Com's Answer #465520 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! What is the lowest-degree polynomial with integer coefficients \n" ); document.write( " and the roots 6, i, and –i? \n" ); document.write( "Two factors \n" ); document.write( "(x-6) = 0 \n" ); document.write( "and \n" ); document.write( "x = +/-i \n" ); document.write( "square both sides \n" ); document.write( "x^2 = -1 \n" ); document.write( "x^2 + 1 = 0 \n" ); document.write( ": \n" ); document.write( "FOIL (x-6)(x^2+1) \n" ); document.write( "x^3 + x - 6x^2 - 6 \n" ); document.write( "in order \n" ); document.write( "x^3 - 6x^2 + x - 6 \n" ); document.write( " |