- 3. - 2. - 1,0, 1, If n represents the position of the number in the sequence, which expression can be used to
determine the nth term?
A. n +1
B.2n - 4
C. n-3
D. n-4

D. n-4

Step-by-step explanation:

In this question:

The term at position 1 is -3

The term at position 2 is -2

The term at positon 3 is -1

That is, at each position, the term is the position subtracted by 4. So the correct answer is given by option D.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form