If X is a member of {2,3,4,5}, find the truth set of 2x+1<8.

2,3

Step-by-step explanation:

2x+1<8

2x<7

x<7/2 or x<3.5

So, the values for x that make this statement true are 2 and 3, because they're both less than 3.5.

- 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