4 x ^ { 4 } - 6 x ^ { 2 } - 2 x - 8 \text { rester } 12 x ^ { 4 } - 2 x ^ { 3 } + 10 x - 5
Evaluate
-96ex^{4}\left(-Im(s)\left(Re(r)Im(t)+Re(t)Im(r)\right)+Re(s)\left(Re(r)Re(t)-Im(r)Im(t)\right)\right)+4x^{4}-2x^{3}-6x^{2}+8x-5
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