Examples

Determine if the Expression is a Factor Using Synthetic Division
x3-3x2-2x+6 , x-4
Step 1
Divide x3-3x2-2x+6x-4 using synthetic division and check if the remainder is equal to 0. If the remainder is equal to 0, it means that x-4 is a factor for x3-3x2-2x+6. If the remainder is not equal to 0, it means that x-4 is not a factor for x3-3x2-2x+6.
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Step 1.1
Place the numbers representing the divisor and the dividend into a division-like configuration.
41-3-26
  
Step 1.2
The first number in the dividend (1) is put into the first position of the result area (below the horizontal line).
41-3-26
  
1
Step 1.3
Multiply the newest entry in the result (1) by the divisor (4) and place the result of (4) under the next term in the dividend (-3).
41-3-26
 4 
1
Step 1.4
Add the product of the multiplication and the number from the dividend and put the result in the next position on the result line.
41-3-26
 4 
11
Step 1.5
Multiply the newest entry in the result (1) by the divisor (4) and place the result of (4) under the next term in the dividend (-2).
41-3-26
 44 
11
Step 1.6
Add the product of the multiplication and the number from the dividend and put the result in the next position on the result line.
41-3-26
 44 
112
Step 1.7
Multiply the newest entry in the result (2) by the divisor (4) and place the result of (8) under the next term in the dividend (6).
41-3-26
 448
112
Step 1.8
Add the product of the multiplication and the number from the dividend and put the result in the next position on the result line.
41-3-26
 448
11214
Step 1.9
All numbers except the last become the coefficients of the quotient polynomial. The last value in the result line is the remainder.
1x2+1x+2+14x-4
Step 1.10
Simplify the quotient polynomial.
x2+x+2+14x-4
x2+x+2+14x-4
Step 2
The remainder from dividing x3-3x2-2x+6x-4 is 14, which is not equal to 0. The remainder is not equal to 0 means that x-4 is not a factor for x3-3x2-2x+6.
x-4 is not a factor for x3-3x2-2x+6
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 [x2  12  π  xdx ] 
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