Answer:
2 x^3 - 2 x^2 - 19 x + 21
Explanation:
Expand the following:
(2 x^2 + 4 x - 7) (x - 3)
Hint: | Multiply out (x - 3) (2 x^2 + 4 x - 7).
| | 2 x^2 | + | 4 x | - | 7
| | | | x | - | 3
| | -6 x^2 | - | 12 x | + | 21
2 x^3 | + | 4 x^2 | - | 7 x | + | 0
2 x^3 | - | 2 x^2 | - | 19 x | + | 21:
Answer: 2 x^3 - 2 x^2 - 19 x + 21