tolong dibantu dongg untuk no 2-4

wait yg 3 dan 4
semoga membantu

2)
(3a)^2 × (2a)^2 × 5a^4
= 9a^2 × 4a^2 × 5a^4
= 180a^8

3)
7^6 × (3/7)^3 × (3/7)^2 × (7/3)^-4
= 7^6 × (3/7)^3 × (3/7)^2 × (3/7)^4
= 7^6 × (3^3/7^3) × (3^2/7^2) × (3^4/7^4)
= 7^6 × 3^9/7^9
= 3^9/7^3
= 19683/343
= 57 132/343

4)
(-1/5)^4 × (1/5)^3 × ((-1/5)^2)^3
= (1/5^4) × (1/5^3) × (-1/5)^6
= (1/5^4) × (1/5^3) × (1/5^6)
= 1/5^13