document.write( "Question 375366: Suppose a polynomial P(x) when divided by x-9 has a quotient of 4x^3+5x^2+7x+13 and a remainder of 88. Find P(9). \n" ); document.write( "
Algebra.Com's Answer #266944 by CharlesG2(834)\"\" \"About 
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Suppose a polynomial P(x) when divided by x-9 has a quotient of 4x^3+5x^2+7x+13 and a remainder of 88. Find P(9).\r
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\n" ); document.write( "\n" ); document.write( "quotient: 4x^3 + 5x^2 + 7x + 13
\n" ); document.write( "quotient -> how many times did x - 9 go into P(x)
\n" ); document.write( "divisor: x - 9
\n" ); document.write( "remainder: 88
\n" ); document.write( "dividend: P(x)\r
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\n" ); document.write( "\n" ); document.write( "(x - 9)(4x^3 + 5x^2 + 7x + 13)
\n" ); document.write( "4x^4 + 5x^3 + 7x^2 + 13x - 36x^3 - 45x^2 - 63x - 117
\n" ); document.write( "4x^4 - 31x^3 - 38x^2 - 50x - 117\r
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\n" ); document.write( "\n" ); document.write( "-117 + 88 = -29\r
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\n" ); document.write( "\n" ); document.write( "check:
\n" ); document.write( "...........4x^3 + 5x^2 + 7x + 13
\n" ); document.write( "x - 9 --> 4x^4 - 31x^3 - 38x^2 - 50x - 29
\n" ); document.write( "..........4x^4 - 36x^3
\n" ); document.write( "..................5x^3 - 38x^2
\n" ); document.write( "..................5x^3 - 45x^2
\n" ); document.write( "..........................7x^2 - 50x
\n" ); document.write( "..........................7x^2 - 63x
\n" ); document.write( ".................................13x - 29
\n" ); document.write( ".................................13x - 117
\n" ); document.write( ".......................................88
\n" ); document.write( "P(x) = 4x^4 - 31x^3 - 38x^2 - 50x - 29
\n" ); document.write( "P(9) = 4 * 9^4 - 31 * 9^3 - 38 * 9^2 - 50 * 9 - 29
\n" ); document.write( "P(9) = 4 * 6561 - 31 * 729 - 38 * 81 - 450 - 29
\n" ); document.write( "P(9) = 26244 - 22599 - 3078 - 479
\n" ); document.write( "P(9) = 88\r
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