document.write( "Question 1030202: Solve the partial fraction decomposition of the rational expression:\r
\n" ); document.write( "\n" ); document.write( "(3x^2+49) / (x(x+7)^2) = (A/x) + (B/(x+7)) + (C/(x+7)^2)\r
\n" ); document.write( "\n" ); document.write( "Thank you for your help!!
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Algebra.Com's Answer #645094 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Solve the partial fraction decomposition of the rational expression:
\n" ); document.write( "(3x^2+49) / (x(x+7)^2) = (A/x) + (B/(x+7)) + (C/(x+7)^2)
\n" ); document.write( "--------------------------
\n" ); document.write( "Equate the numerators of the two sides::
\n" ); document.write( "3x^2 + 49 = A(x+7)^2 + B(x(x+7)) + Cx
\n" ); document.write( "-------
\n" ); document.write( "3x^2 + 49 = A(x^2+14x + 49) + B(x^2+7x) + Cx
\n" ); document.write( "-------
\n" ); document.write( "3x^2 + 49 = (A+B)x^2 + (14A +7B +C)x + 49A
\n" ); document.write( "--------
\n" ); document.write( "Equate the proper coefficients:
\n" ); document.write( "A+B = 3
\n" ); document.write( "14A + 7B + C = 0
\n" ); document.write( "49A = 49
\n" ); document.write( "----------
\n" ); document.write( "Solve for A, B, and C
\n" ); document.write( "A = 1
\n" ); document.write( "B = 3-1 = 2
\n" ); document.write( "-----
\n" ); document.write( "C = -14-14 = -28
\n" ); document.write( "------------------------
\n" ); document.write( "(3x^2+49) / (x(x+7)^2) = (A/x) + (B/(x+7)) + (C/(x+7)^2)
\n" ); document.write( "----------------
\n" ); document.write( "(3x^2+49) / (x(x+7)^2) = = 1/x + 2/(x+7) - 28/(x+7)^2
\n" ); document.write( "--------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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\n" ); document.write( "\n" ); document.write( "-----
\n" ); document.write( "3x^2 + 49 = 1/(x+7)^2 + 2/
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