document.write( "Question 194080This question is from textbook Saxon Algebra 2
\n" ); document.write( ": If P(x) = 3x^5 - 8x^4 + 3x^3 + 2x^2 - 16x + 14, then P(3) = ?
\n" ); document.write( "...is it 682?
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Algebra.Com's Answer #145675 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
There are two ways to do this:\r
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\n" ); document.write( "\n" ); document.write( "Direct Substitution and Evaluation Method:\r
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\n" ); document.write( "\n" ); document.write( "\"P%28x%29=3x%5E5-8x%5E4%2B3x%5E3%2B2x%5E2-16x%2B14\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=3%283%29%5E5-8%283%29%5E4%2B3%283%29%5E3%2B2%283%29%5E2-16%283%29%2B14\" Plug in \"x=3\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=3%28243%29-8%283%29%5E4%2B3%283%29%5E3%2B2%283%29%5E2-16%283%29%2B14\" Raise \"3\" to the 5th power to get \"243\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=3%28243%29-8%2881%29%2B3%283%29%5E3%2B2%283%29%5E2-16%283%29%2B14\" Raise \"3\" to the 4th power to get \"81\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=3%28243%29-8%2881%29%2B3%2827%29%2B2%283%29%5E2-16%283%29%2B14\" Cube \"3\" to get \"27\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=3%28243%29-8%2881%29%2B3%2827%29%2B2%289%29-16%283%29%2B14\" Square \"3\" to get \"9\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=729-8%2881%29%2B3%2827%29%2B2%289%29-16%283%29%2B14\" Multiply \"3\" and \"243\" to get \"729\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=729-648%2B3%2827%29%2B2%289%29-16%283%29%2B14\" Multiply \"-8\" and \"81\" to get \"-648\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=729-648%2B81%2B2%289%29-16%283%29%2B14\" Multiply \"3\" and \"27\" to get \"81\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=729-648%2B81%2B18-16%283%29%2B14\" Multiply \"2\" and \"9\" to get \"18\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=729-648%2B81%2B18-48%2B14\" Multiply \"-16\" and \"3\" to get \"-48\".\r
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\n" ); document.write( "\n" ); document.write( "\"P%283%29=146\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "OR....\r
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\n" ); document.write( "\n" ); document.write( "Synthetic Division Method:\r
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\n" ); document.write( "\n" ); document.write( "First lets find our test zero:\r
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\n" ); document.write( "\n" ); document.write( "\"x-3=0\" Set the denominator \"x-3\" equal to zero\r
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\n" ); document.write( "\n" ); document.write( "\"x=3\" Solve for x.\r
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\n" ); document.write( "\n" ); document.write( "so our test zero is 3\r
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\n" ); document.write( "\n" ); document.write( "Now set up a synthetic division table by placing the test zero in the upper left corner and placing the coefficients of the function to the right of the test zero.\n" ); document.write( "\n" ); document.write( "
3|3-832-1614
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\n" ); document.write( "\n" ); document.write( "Start by bringing down the leading coefficient (it is the coefficient with the highest exponent which is 3)\r
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3|3-832-1614
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3
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\n" ); document.write( "\n" ); document.write( " Multiply 3 by 3 and place the product (which is 9) right underneath the second coefficient (which is -8)\r
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3|3-832-1614
|9
3
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\n" ); document.write( "\n" ); document.write( " Add 9 and -8 to get 1. Place the sum right underneath 9.\r
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3|3-832-1614
|9
31
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\n" ); document.write( "\n" ); document.write( " Multiply 3 by 1 and place the product (which is 3) right underneath the third coefficient (which is 3)\r
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3|3-832-1614
|93
31
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\n" ); document.write( "\n" ); document.write( " Add 3 and 3 to get 6. Place the sum right underneath 3.\r
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3|3-832-1614
|93
316
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\n" ); document.write( "\n" ); document.write( " Multiply 3 by 6 and place the product (which is 18) right underneath the fourth coefficient (which is 2)\r
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3|3-832-1614
|9318
316
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\n" ); document.write( "\n" ); document.write( " Add 18 and 2 to get 20. Place the sum right underneath 18.\r
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3|3-832-1614
|9318
31620
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\n" ); document.write( "\n" ); document.write( " Multiply 3 by 20 and place the product (which is 60) right underneath the fifth coefficient (which is -16)\r
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3|3-832-1614
|931860
31620
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\n" ); document.write( "\n" ); document.write( " Add 60 and -16 to get 44. Place the sum right underneath 60.\r
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3|3-832-1614
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3162044
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\n" ); document.write( "\n" ); document.write( " Multiply 3 by 44 and place the product (which is 132) right underneath the sixth coefficient (which is 14)\r
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3|3-832-1614
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3162044
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\n" ); document.write( "\n" ); document.write( " Add 132 and 14 to get 146. Place the sum right underneath 132.\r
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3|3-832-1614
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3162044146
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\n" ); document.write( "\n" ); document.write( "Since the last column adds to 146, we have a remainder of 146. \r
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\n" ); document.write( "\n" ); document.write( "So according to the remainder theorem, this means that \"P%283%29=146\"
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