document.write( "Question 926867: How do I find the real zeros to the problem f(x)= x^4+x^3-8x^2-9x-9? \n" ); document.write( "
Algebra.Com's Answer #562538 by ewatrrr(24785)\"\" \"About 
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document.write( "f(x)= x^4+x^3-8x^2-9x-9, x = ± 3 are roots (81+27-72-27-9) = 0 And( (81-27-72+ 27-9)= 0
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document.write( "Using Synthetic Division
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document.write( "3	1	1	-8	-9	-9
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document.write( "		3	12	12	9
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document.write( "	1	4	4	-3	0  and again
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document.write( "-3		-3	-3	3	
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document.write( "	1	1	1	0	
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document.write( "(x-3)(x+3)(x^2 + x + 1)
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document.write( ".......
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document.write( "x^2 + x + 1  has imaginary roots
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document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\" 
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document.write( "\"x+=+%281+%2B-+i%2Asqrt%28+3+%29%29%2F2+\" 
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document.write( "-.5 ± .5i√3 
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