The domain of the following relation: r: {(-4, 8), (8, 10), (5, 4), (1, 6), (5. -9)} is

{8, 10, 4, 6, -9)
{-4, 1,5,8)
{-4, 8, 5, 1,5)
no domain exists

Step-by-step explanation:

- 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