हल करना 20(n ^ 2 + 39n - 390) = 0 | 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

$$20(n^{2}+39n-390)=0$$