Помогите решить 2 и 3

Question

Помогите решить 2 и 3

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Answer 1

2) (3m^6 n^3)^4 × (-1/81m^8 n^2) = 81m^24 n^12 × (- 1/81m^8 n^2)=-m^32 n^14
3)-2 2/5 c^6 d^11 × (-1/2cd^2)^2 = -12/5 c^6 d^11 × (-1/4c^2 d^4)= 3/5 c^8 d^15