Please help me on these questions

14. 40/9 or 3 1/9

17. 1/3

Step-by-step explanation:

For question 14, 2 1/4 is equal to 9/4. When dividing by the fraction, it is the same as mutiplying by the reciprocal. So you multiply across and get 40/9 which is simplified to 3 1/9

For question 17. 8 is equal to 8/1. 2 2/3 is equal to 8/3. Multiply 2 2/3 by the reciprocal of 8/3. (which is 3/8) you get 8/24 which is equal to 1/3.

Hope that helped!

- 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

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right