document.write( "Question 448579: Hello,\r
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\n" ); document.write( "\n" ); document.write( "Find all rational roots of the equation x^3-5x^2-4x+20=0
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Algebra.Com's Answer #308650 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
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document.write( "Hi,
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document.write( "Find all rational roots of the equation 
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document.write( " x^3-5x^2-4x+20=0   |If x = 2  then 8-20-8-20= 0
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document.write( " x^3-5x^2-4x+20)/(x-2) = x^2-3x-10
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document.write( " (x-2)(x^2-3x-10) = 0
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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+=+%283+%2B-+sqrt%28+49+%29%29%2F%282%29+\" 
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document.write( "              x = (3 ± 7)/2   x = 5 and x = -2
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document.write( " Rational roots are: -2,2,5 \n" );
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