Kelsey buys 4 packages of juice boxes for a class party. Each pack has 1 point 5 rows with 2 juice boxes in each row. How many boxes of juice does Kelsey buy in all?

She bought a total of 12 juice boxes

Step-by-step explanation:

Here, we want to calculate the number of juice boxes bought by Kelsey.

Total package bought = 4

Each pack has 1.5 rows, so the total number of rows = 1.5 * 4 = 6 rows

There are 2 boxes per row, so the number of juice boxes will be 2 * 6 = 12 boxes

- 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