Resolver 9r ^ 2 - s ^ 2 - 6s - 9 | 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

$$9r^{2}-s^{2}-6s-9$$