document.write( "Question 785719: what is is polynomial function of least degree with real coefficients -4, 2i, and -2i? \n" ); document.write( "
Algebra.Com's Answer #477698 by fcabanski(1391)\"\" \"About 
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This problem is not written correctly. The given values are zeroes instead of coefficients. Not all of them are real.


\n" ); document.write( "To find a polynomial of least degree with the roots -4, 2i and -2i, subtract the zeroes from x to find factors.


\n" ); document.write( "x=-4 ---> x+4


\n" ); document.write( "x=2i --->x-2i


\n" ); document.write( "x=-2i ---> x+2i


\n" ); document.write( "Multiply the factors together. It's wise to multiply the factors involving imaginary numbers together first.


\n" ); document.write( "(x-2i)(x+2i) = \"x%5E2+-4i%5E2\" and since \"i=sqrt%28-1%29\" that's \"x%5E2+%2B4\".


\n" ); document.write( "\"%28x%2B4%29%28x%5E2+%2B+4%29+=+x%5E3+%2B+4x%5E2++%2B4x+%2B+16\"


\n" ); document.write( "Since some number, a, may have been factored out of each term, multiply the whole thing by a. \"a%28x%5E3+%2B+4x%5E2++%2B4x+%2B+16%29\" \n" ); document.write( "

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