Divide Using Long Polynomial Division (x^3-13x^2+40x+18)÷(x-7)


Step 1
Set up the polynomials to be divided. If there is not a term for every exponent, insert one with a value of .
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Step 2
Divide the highest order term in the dividend by the highest order term in divisor .
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Step 3
Multiply the new quotient term by the divisor.
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Step 4
The expression needs to be subtracted from the dividend, so change all the signs in
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-+

Step 5
After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.
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-+
-

Step 6
Pull the next terms from the original dividend down into the current dividend.
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-+
-+

Step 7
Divide the highest order term in the dividend by the highest order term in divisor .
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--++
-+
-+

Step 8
Multiply the new quotient term by the divisor.
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--++
-+
-+
-+

Step 9
The expression needs to be subtracted from the dividend, so change all the signs in
-
--++
-+
-+
+-

Step 10
After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.
-
--++
-+
-+
+-
-

Step 11
Pull the next terms from the original dividend down into the current dividend.
-
--++
-+
-+
+-
-+

Step 12
Divide the highest order term in the dividend by the highest order term in divisor .
--
--++
-+
-+
+-
-+

Step 13
Multiply the new quotient term by the divisor.
--
--++
-+
-+
+-
-+
-+

Step 14
The expression needs to be subtracted from the dividend, so change all the signs in
--
--++
-+
-+
+-
-+
+-

Step 15
After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.
--
--++
-+
-+
+-
-+
+-
+

Step 16
The final answer is the quotient plus the remainder over the divisor.


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