One way to calulate the sale price when there is a 25% discount is to...

To find a percent discount, first change the percent discounted to a decimal by dividing the percent by 100. This means that 25 percent in decimal form becomes 0.25. Then, multiply the decimal by the original price.

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

ian gonna lie that is way to much