document.write( "Question 1186857: Use synthetic division to rewrite the following fraction in the form q(x)+r(x)/d(x), where d(x) is the denominator of the original fraction, q(x) is the quotient, and r(x) is the remainder. \r
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document.write( "2x^3 − 8ix^2 + 4x + (9−2i)/x−2i \n" );
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Algebra.Com's Answer #849367 by CPhill(1959)![]() ![]() You can put this solution on YOUR website! Here's how to perform synthetic division with complex numbers and rewrite the expression:\r \n" ); document.write( "\n" ); document.write( "**1. Set up the synthetic division:**\r \n" ); document.write( "\n" ); document.write( "Write down the coefficients of the polynomial in the numerator and the value of x that makes the denominator zero (2i in this case):\r \n" ); document.write( "\n" ); document.write( "``` \n" ); document.write( "2i | 2 -8i 4 9 - 2i \n" ); document.write( " |________________________ \n" ); document.write( "```\r \n" ); document.write( "\n" ); document.write( "**2. Perform the synthetic division:**\r \n" ); document.write( "\n" ); document.write( "* Bring down the first coefficient (2):\r \n" ); document.write( "\n" ); document.write( "``` \n" ); document.write( "2i | 2 -8i 4 9 - 2i \n" ); document.write( " | \n" ); document.write( " ------------------------ \n" ); document.write( " 2 \n" ); document.write( "```\r \n" ); document.write( "\n" ); document.write( "* Multiply the value outside (2i) by the number just brought down (2) and write the result under the next coefficient (-8i):\r \n" ); document.write( "\n" ); document.write( "``` \n" ); document.write( "2i | 2 -8i 4 9 - 2i \n" ); document.write( " | 4i \n" ); document.write( " ------------------------ \n" ); document.write( " 2 -4i \n" ); document.write( "```\r \n" ); document.write( "\n" ); document.write( "* Add the numbers in the second column (-8i and 4i):\r \n" ); document.write( "\n" ); document.write( "``` \n" ); document.write( "2i | 2 -8i 4 9 - 2i \n" ); document.write( " | 4i \n" ); document.write( " ------------------------ \n" ); document.write( " 2 -4i \n" ); document.write( "```\r \n" ); document.write( "\n" ); document.write( "* Multiply 2i by -4i and write the result under the next coefficient (4):\r \n" ); document.write( "\n" ); document.write( "``` \n" ); document.write( "2i | 2 -8i 4 9 - 2i \n" ); document.write( " | 4i 8 \n" ); document.write( " ------------------------ \n" ); document.write( " 2 -4i 12 \n" ); document.write( "```\r \n" ); document.write( "\n" ); document.write( "* Add the numbers in the third column (4 and 8):\r \n" ); document.write( "\n" ); document.write( "``` \n" ); document.write( "2i | 2 -8i 4 9 - 2i \n" ); document.write( " | 4i 8 \n" ); document.write( " ------------------------ \n" ); document.write( " 2 -4i 12 \n" ); document.write( "```\r \n" ); document.write( "\n" ); document.write( "* Multiply 2i by 12 and write the result under the last term (9-2i):\r \n" ); document.write( "\n" ); document.write( "``` \n" ); document.write( "2i | 2 -8i 4 9 - 2i \n" ); document.write( " | 4i 8 24i \n" ); document.write( " ------------------------ \n" ); document.write( " 2 -4i 12 9 + 22i \n" ); document.write( "```\r \n" ); document.write( "\n" ); document.write( "* Add the numbers in the last column:\r \n" ); document.write( "\n" ); document.write( "``` \n" ); document.write( "2i | 2 -8i 4 9 - 2i \n" ); document.write( " | 4i 8 24i \n" ); document.write( " ------------------------ \n" ); document.write( " 2 -4i 12 9 + 22i \n" ); document.write( "```\r \n" ); document.write( "\n" ); document.write( "**3. Interpret the results:**\r \n" ); document.write( "\n" ); document.write( "The numbers in the bottom row (2, -4i, 12) are the coefficients of the quotient, and the last number (9 + 22i) is the remainder. The degree of the quotient is one less than the degree of the original polynomial.\r \n" ); document.write( "\n" ); document.write( "Therefore, the quotient q(x) is 2x² - 4ix + 12, and the remainder r(x) is 9 + 22i. The divisor d(x) is x - 2i.\r \n" ); document.write( "\n" ); document.write( "**4. Write the expression:**\r \n" ); document.write( "\n" ); document.write( "The expression can be written as:\r \n" ); document.write( "\n" ); document.write( "2x² - 4ix + 12 + (9 + 22i) / (x - 2i) \n" ); document.write( " \n" ); document.write( " |