QUESTION IMAGE
Question
question
use the box method to distribute and simplify ((3x - 1)(4x^4 - 4x - 5x^3 - 5 + 2x^2)). drag and drop the terms to the correct locations of the table.
((3x - 1)(4x^4 - 4x - 5x^3 - 5 + 2x^2))
rows:
columns:
Step1: Rearrange polynomial by degree
First, order the second polynomial from highest to lowest degree:
$4x^4 - 5x^3 + 2x^2 - 4x - 5$
Step2: Set up box table
Create a table with 2 rows (for $3x$ and $-1$) and 5 columns (for each term in the ordered polynomial):
| $4x^4$ | $-5x^3$ | $2x^2$ | $-4x$ | $-5$ | |
|---|---|---|---|---|---|
| $-1$ |
Step3: Multiply row 1 terms
Calculate products for the $3x$ row:
- $3x \times 4x^4 = 12x^5$
- $3x \times (-5x^3) = -15x^4$
- $3x \times 2x^2 = 6x^3$
- $3x \times (-4x) = -12x^2$
- $3x \times (-5) = -15x$
Step4: Multiply row 2 terms
Calculate products for the $-1$ row:
- $-1 \times 4x^4 = -4x^4$
- $-1 \times (-5x^3) = 5x^3$
- $-1 \times 2x^2 = -2x^2$
- $-1 \times (-4x) = 4x$
- $-1 \times (-5) = 5$
Step5: Fill the box table
Populate the table with the calculated products:
| $4x^4$ | $-5x^3$ | $2x^2$ | $-4x$ | $-5$ | |
|---|---|---|---|---|---|
| $-1$ | $-4x^4$ | $5x^3$ | $-2x^2$ | $4x$ | $5$ |
Step6: Combine like terms
Sum all terms and combine like terms:
$12x^5 + (-15x^4 -4x^4) + (6x^3 +5x^3) + (-12x^2 -2x^2) + (-15x +4x) +5$
$=12x^5 -19x^4 +11x^3 -14x^2 -11x +5$
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Completed Box Table:
| $4x^4$ | $-5x^3$ | $2x^2$ | $-4x$ | $-5$ | |
|---|---|---|---|---|---|
| $-1$ | $-4x^4$ | $5x^3$ | $-2x^2$ | $4x$ | $5$ |
Simplified Polynomial:
$12x^5 -19x^4 +11x^3 -14x^2 -11x +5$