document.write( "Question 910555: Find the equation whose roots are each two more than the roots of x^3-4x^2+3x+2 \n" ); document.write( "
Algebra.Com's Answer #552547 by MathLover1(20850)\"\" \"About 
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first find roots:\r
\n" ); document.write( "\n" ); document.write( "\"x%5E3-4x%5E2%2B3x%2B2=0\" write \"-4x%5E2\" as \"-2x%5E2-2x%5E2\" and \"3x\" as \"4x-x\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E3-2x%5E2-2x%5E2%2B4x-x%2B2=0\" group\r
\n" ); document.write( "\n" ); document.write( "\"%28x%5E3-2x%5E2%29-%282x%5E2-4x%29-%28x-2%29=0\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2%28x-2%29-2x%28x-2%29-%28x-2%29=0\"\r
\n" ); document.write( "\n" ); document.write( "\"%28x-2%29%28x%5E2-2x-1%29=0\"\r
\n" ); document.write( "\n" ); document.write( "if \"x-2=0\" => \"x=2\" first root\r
\n" ); document.write( "\n" ); document.write( "to find other two zeros solve \"x%5E2-2x-1=0\" using quadr. formula\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\" \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-%28-2%29+%2B-+sqrt%28%28-2%29%5E2-4%2A1%2A%28-1%29+%29%29%2F%282%2A1%29+\" \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%282+%2B-+sqrt%284%2B4+%29%29%2F2+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%282+%2B-+sqrt%282%2A4+%29%29%2F2+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%282+%2B-+2sqrt%282+%29%29%2F2+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28cross%282%29+%2B-+cross%282%29sqrt%282+%29%29%2Fcross%282%29+\" \r
\n" ); document.write( "\n" ); document.write( "\"x+=+%281+%2B-+sqrt%282+%29%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%281+%2B-+1.41%29+\"\r
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\n" ); document.write( "\n" ); document.write( "second root: \"x+=+1+%2B+1.41=2.41+\"\r
\n" ); document.write( "\n" ); document.write( "third root: \"x+=+1+-+1.41=-0.41+\"\r
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\n" ); document.write( "\n" ); document.write( "now make all two more:\r
\n" ); document.write( "\n" ); document.write( "first root \"x=2\" => two more will be \"x%5B1%5D=4\"\r
\n" ); document.write( "\n" ); document.write( "second root: \"x+=2.41+\" => two more will be \"x%5B2%5D+=4.41+\" \r
\n" ); document.write( "\n" ); document.write( "third root: \"x+=-0.41+\" => two more will be \"x%5B3%5D+=1.59+\"\r
\n" ); document.write( "\n" ); document.write( "Find the equation using roots:\r
\n" ); document.write( "\n" ); document.write( "\"+%28x-x%5B1%5D%29%28x-x%5B2%5D%29%28x-x%5B3%5D%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"+%28x-4%29%28x-4.41%29%28x-1.59%29+\" multiply all\r
\n" ); document.write( "\n" ); document.write( "\"+%28x%5E2-8.41x%2B17.64%29%28x-1.59%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E3-10x%5E2%2B31.0119x-28.0476\"\r
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