Answer:

1. 15y

2. -40hb

3. 0.35ad

4. 4b + 4

5. 6x - 20

6. 4y² - 8y + 19

7. -3u²v² + 3uv² + 5uv

8. -3u²v² + 3uv² + 5uv

9. x³ - 15x² + 5x + 10

10. -7y³ + 9y² + 6y - 7

Step-by-step explanation:

E

1. 40y - 25y = 15y

2. -15hb - 25hb = -40hb

3. 0.5ad - 0.15ab = 0.35ad

4. (8b +6) - (4b +2) = 8b + 6 - 4b - 2= 4b +4

5. 8(x -5) -2(x -10) = 8x - 40 - 2x + 20 = 6x - 20

F

6. (12y²-6y+11) - (8y²+2y-8) = 12y² - 6y + 11 - 8y² - 2y + 8 = 4y² -8y + 19

7.(5u²v² - 4uv² - 10uv) - (8u²v² - 7uv² - 15uv) = 5u²v² - 4uv² - 10uv - 8u²v² + 7uv² + 15uv = -3u²v² + 3uv² + 5uv

G.

8. 5u²v² - 4uv² - 10uv

-(8u²v² - 7uv² - 15uv)

________________

-3u²v² + 3uv² + 5uv

9. 6x³ - 8x² + 0x + 10

-(5x³ + 7x² - 5x)

_____________

x³ - 15x² + 5x + 10

10. -4y³ + 9y² +0y - 11

-(3y³ + 0y² - 6y - 4)

_______________

-7y³ + 9y² + 6y -7

Please study this. This concept will be essential in higher level mathematics.