हल करना u^ 3 -3u+9); (u^ 4 -3u^ 3 +2u+6)+(u^ 4 -3u^ 2 +6u+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

$$u^{3}-3u+9); (u^{4}-3u^{3}+2u+6)+(u^{4}-3u^{2}+6u+2)-$$