Divide using synthetic division.x+2x5+3x4+2x3+4x2+5x−5x+2x5+3x4+2x3+4x2+5x−5=_____(Simplify your answer. Use integers or fractions for any numbers in the expression. Do not factor.)
Q. Divide using synthetic division.x+2x5+3x4+2x3+4x2+5x−5x+2x5+3x4+2x3+4x2+5x−5=_____(Simplify your answer. Use integers or fractions for any numbers in the expression. Do not factor.)
Set up division: To perform synthetic division, we first need to set up the division. The divisor is x+2, so the number we use for synthetic division is the opposite of the constant term of the divisor, which is −2.
Write coefficients: Write down the coefficients of the dividend polynomial x5+3x4+2x3+4x2+5x−5, which are 1, 3, 2, 4, 5, and −5.
Bring down leading coefficient: Begin the synthetic division process by bringing down the leading coefficient (which is 1) to the bottom row.
Multiply and add: Multiply the number just written on the bottom row by −2 (the number we use for synthetic division) and write the result in the next column of the second row, under the second coefficient (which is 3).Calculation: 1×−2=−2.
Repeat process for third coefficient: Add the numbers in the second column to get the new second coefficient in the bottom row.Calculation: 3+(−2)=1.
Continue with fourth coefficient: Repeat the multiplication and addition process for the third coefficient. Multiply the new second coefficient (which is 1) by −2 and add it to the third coefficient (which is 2).Calculation: 1×−2=−2, then 2+(−2)=0.
Proceed with fifth coefficient: Continue the process for the fourth coefficient. Multiply the new third coefficient (which is 0) by −2 and add it to the fourth coefficient (which is 4).Calculation: 0×−2=0, then 4+0=4.
Address last coefficient: Proceed with the fifth coefficient. Multiply the new fourth coefficient (which is 4) by −2 and add it to the fifth coefficient (which is 5).Calculation: 4×−2=−8, then 5+(−8)=−3.
Determine quotient and remainder: Finally, address the last coefficient. Multiply the new fifth coefficient (which is −3) by −2 and add it to the last coefficient (which is −5).Calculation: −3×−2=6, then −5+6=1.
Determine quotient and remainder: Finally, address the last coefficient. Multiply the new fifth coefficient (which is −3) by −2 and add it to the last coefficient (which is −5).Calculation: −3×−2=6, then −5+6=1.The bottom row now represents the coefficients of the quotient polynomial. The remainder is the last number on the bottom row.The quotient polynomial is x4+x3+4x−3 with a remainder of 1.
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