Jasper needs 180 of string for his project how many yards did he buy．

5 yards

Step-by-step explanation:

The measurements of the 180 should be Inches

Length of string Jasper needs = 180 inches

how many yards did he buy?

1 yard = 36 inches

Number of yards he needs = Length of string Jasper needs / inches per yard

= 180 inches / 36 inches

= 5 yards

Number of yards he needs = 5 yards

- 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