document.write( "Question 486051: x^2+4x+8=0 solve by using quadratic formula \n" ); document.write( "
Algebra.Com's Answer #332309 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"x%5E2%2B4x%2B8=0\"\r\n" );
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document.write( "Compare to\r\n" );
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document.write( "\"ax%5E2%2Bbx%2Bc=0\"\r\n" );
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document.write( "\"a=1\", \"b=4\", \"c=8\"\r\n" );
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document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\" \r\n" );
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document.write( "\"x+=+%28-%284%29+%2B-+sqrt%28+%284%29%5E2-4%2A%281%29%2A%288%29+%29%29%2F%282%2A%281%29%29+\" \r\n" );
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document.write( "\"x+=+%28-4+%2B-+sqrt%2816-32+%29%29%2F2+\"\r\n" );
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document.write( "\"x+=+%28-4+%2B-+sqrt%28-16+%29%29%2F2+\"\r\n" );
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document.write( "\"x+=+%28-4+%2B-+i%2Asqrt%2816+%29%29%2F2+\"\r\n" );
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document.write( "\"x+=+%28-4+%2B-+i%2A4%29%2F2+\"\r\n" );
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document.write( "\"x+=+%28-4+%2B-+4i%29%2F2+\"\r\n" );
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document.write( "\"x+=+%28-4%29%2F2+%2B-+%284i%29%2F2+\"\r\n" );
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document.write( "\"x+=+-2+%2B-+2i+\"\r\n" );
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document.write( "Two conjugate imaginary solutions:  -2 + 2i and -2 - 2i\r\n" );
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document.write( "Edwin
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