Menyelesaikan n/2 * (3n + 1) + n/2 * (3n + 3) | 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

$$\frac{n}{2}(3n+1)+\frac{n}{2}(3n+3)$$