Resolver x * x ^ 2 - 21x; x ^ 3 - 9x; x ^ 2 - 8x + 15 | 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

$$xx^{2}-21x; x^{3}-9x; x^{2}-8x+15$$