fill in the missing values below one at a time to find the quotient when -2x^3 + 3x^2 + 4 is divided by x - 2.

fill in the missing values below one at a time to find the quotient when -2x^3 + 3x^2 + 4 is divided by x - 2.
Answer
Explanation:
Step1: Use polynomial long - division or synthetic division.
We use synthetic division. The divisor is (x - 2), so the value for synthetic division is (c = 2). The polynomial is (-2x^{3}+3x^{2}+0x + 4) (we write (0x) for the missing (x) - term).
Step2: Set up synthetic division.
Bring down the first coefficient (-2). Multiply (2\times(-2)=-4), add to the next coefficient: (3+( - 4)=-1). Then (2\times(-1)=-2), add to the next coefficient (0+( - 2)=-2). Then (2\times(-2)=-4), add to the last coefficient (4+( - 4)=0). The synthetic - division setup:
| (2) | (-2) | (3) | (0) | (4) |
|---|---|---|---|---|
| (-4) | (-2) | (-4) | ||
| (-2) | (-1) | (-2) | (0) | |
| The quotient is (-2x^{2}-x - 2). | ||||
| We can also think of it in terms of the area - model (box method). | ||||
| The first term of the quotient when dividing (-2x^{3}) by (x) is (-2x^{2}). Multiply ((x - 2)\times(-2x^{2})=-2x^{3}+4x^{2}). Subtract from the original polynomial: ((-2x^{3}+3x^{2}+4)-(-2x^{3}+4x^{2})=-x^{2}+4). | ||||
| The next term of the quotient when dividing (-x^{2}) by (x) is (-x). Multiply ((x - 2)\times(-x)=-x^{2}+2x). Subtract: ((-x^{2}+4)-(-x^{2}+2x)=-2x + 4). | ||||
| The last term of the quotient when dividing (-2x) by (x) is (-2). Multiply ((x - 2)\times(-2)=-2x + 4). Subtract: ((-2x + 4)-(-2x + 4)=0). | ||||
| The box - method: | ||||
| (x) | (-2) | |||
| --- | --- | --- | ||
| (-2x^{2}) | (-2x^{3}) | (4x^{2}) | ||
| (-x) | (-x^{2}) | (2x) | ||
| (-2) | (-2x) | (4) | ||
| The quotient is (-2x^{2}-x - 2). |
Answer:
The quotient is (-2x^{2}-x - 2)