Question
Use synthetic division to divide the polynomials.
Ask by Reed Olson. in the United States
Mar 23,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The division of
by
using synthetic division yields a quotient of
and a remainder of
.
Solution
Given the division
we first rewrite the polynomial in descending order and include any missing degrees. The dividend becomes
We will use synthetic division with the zero of the divisor
, which is
.
The coefficients of the dividend are:
Now, perform synthetic division with
:
- Write the coefficients:
- Bring down the first coefficient:
- Multiply
(the number just written) by (the synthetic divisor) and write the result under the next coefficient:
- Add this to the second coefficient:
- Multiply the new number
by :
- Add this to the third coefficient:
- Multiply
by :
- Add this to the fourth coefficient:
- Multiply
by :
- Add this to the fifth coefficient:
The synthetic division table is now complete. The resulting numbers are:
- Quotient coefficients:
, , , which correspond to the polynomial
- Remainder:
.
Thus, the division can be written as:
The answer (the quotient) is:
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Bonus Knowledge
To divide the polynomial
by
using synthetic division, we will first rewrite the polynomial in standard form:
Next, we will use the root of
, which is
, for synthetic division.
- Write down the coefficients of the polynomial:
. - Set up synthetic division with
:
-2 | -2 4 0 4 -3
| 4 -8 16 -8
----------------------
-2 2 -8 20 -11
- Bring down the leading coefficient
. - Multiply
by and add to to get . - Multiply
by and add to to get . - Multiply
by and add to to get . - Multiply
by and add to to get .
The result is:
Thus, we can express the division as: