हल करना 81 * 3 ^ (h + 1) - 9 * 3 ^ h; 81 * 3 ^ (n + 2) - 3 * 3 ^ (n + 2) | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$81\times3^{h+1}-9\times3^{h}; 81\times3^{n+2}-3\times3^{n+2}$$