QUESTION IMAGE
Question
use a factor table to calculate the polynomial product of $-7w^2 - 8w - 6$ and $2w^2 + 8w - 7$.
select a factor table with appropriate dimensions.
○ 1x2
○ 2x1
○ 1x3
○ 3x1
○ 2x2
○ 2x3
○ 3x2
○ 3x3
Step1: Identify factor table dimensions
First polynomial: $-7w^2 -8w -6$ (3 terms), second polynomial: $2w^2 +8w -7$ (3 terms). So the factor table is 3x3.
Step2: Set up and fill the table
Multiply each term from the first polynomial by each term from the second polynomial:
| $2w^2$ | $8w$ | $-7$ | |
|---|---|---|---|
| $-8w$ | $-8w \times 2w^2 = -16w^3$ | $-8w \times 8w = -64w^2$ | $-8w \times (-7) = 56w$ |
| $-6$ | $-6 \times 2w^2 = -12w^2$ | $-6 \times 8w = -48w$ | $-6 \times (-7) = 42$ |
Step3: Combine like terms
Combine terms with the same exponent of $w$:
- $w^4$ term: $-14w^4$
- $w^3$ terms: $-56w^3 -16w^3 = -72w^3$
- $w^2$ terms: $49w^2 -64w^2 -12w^2 = -27w^2$
- $w$ terms: $56w -48w = 8w$
- Constant term: $42$
Step4: Assemble the final polynomial
Combine all simplified terms in descending order of exponents.
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Polynomial Product:
$-14w^4 -72w^3 -27w^2 +8w +42$
Correct Factor Table Dimension:
3x3