Example

Finding the Quotient (3x3+10x2+6x2)÷(x+2)(3x^3 + 10x^2 + 6x - 2) \div (x + 2)

Apply synthetic division to find the quotient and remainder when 3x3+10x2+6x23x^3 + 10x^2 + 6x - 2 is divided by x+2x + 2. Write the coefficients of the dividend in the first row: 33, 1010, 66, and 2-2. The divisor is x+2x + 2, so place c=2c = -2 in the divisor box. Bring down the first coefficient, 33, to the third row. Multiply 33 by 2-2 to get 6-6, and place it in the second row under the second coefficient 1010. Add the column (10+(6)10 + (-6)) to get 44 in the third row. Multiply 44 by 2-2 to get 8-8, placing it under 66. Add the column (6+(8)6 + (-8)) to get 2-2. Multiply 2-2 by 2-2 to get 44, placing it under the final coefficient 2-2. Add the column (2+4-2 + 4) to get 22. The third row numbers are 33, 44, 2-2, and 22. The first three numbers give the quotient 3x2+4x23x^2 + 4x - 2, and the final number 22 is the remainder.

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Updated 2026-04-29

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