1. 3(x + 2)

Jawaban:

1. 3x + 6

2. 32x – 12

3. 2a + 10

4. 6p² – 8p

5. -2pr + 4pq

6. a² + 3a + 2

7. x² – x – 20

8. 12r² – 11r + 2

9. r² – 6rs + 9s²

10. 16e² – 24e + 9

Jawaban:

1. 3(x + 2) = 3x + 6

2. 4(8x – 3) = 32x – 12

3. 2(a + 5) = 2a + 10

4. p(6p -8) = 6p² – 8p

5. -2(pr – 2pq) = -2pr + 4pq

6. (a + 1)(a + 2)

= a² + 2a + 1a + 2

= a² + 3a + 2

7. (x -5)(x – 4)

= x² – 4x – 5x + 20

= x² – 9x + 20

8. (3r – 2)(4r – 1)

= 12r² – 3r – 8r + 2

= 12r² – 11r + 2

9. (r -3s)²

= (r – 3s)(r – 3s)

= r² – 3rs – 3rs + 9s

= r² – 6rs + 9s

10. (4e – 3)²

= (4e – 3)(4e – 3)

= 16e² – 12e – 12e + 9

= 16e² – 24e + 9