Mohon jawab ya, buat No. 2-10

Jawaban:

2. 2² × 2⁴ : 2² = 2(²+⁴-²) = 2⁴ (B)

3. x² + 5x + 6 = (x + 3)(x + 2) (C)

4. 12 – 3r = 3

-3r = 3 – 12

-3r = -9

r = 3 (D)

5. 4 – 3b = 2b – 16

-3b – 2b = -16 – 4

– 5b = -20

b = 4 (D)

7. x + 4y = 7

2x + y = 9 (D)

8. (4a²b²c³)² = 16a⁴b⁴c⁶ (D)

9. 2⁵ = 32 (B)

10. ( x – 3) (x + 2)

= x² + 2x – 3x – 6

= x² – x – 6 (C)