Expand
t^{4}-2t^{3}-t^{2}+2t+1
Evaluate
\left(t^{2}-t-1\right)^{2}
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t^{4}-2t^{3}-t^{2}+2t+1
Square t^{2}-t-1.
t^{4}-2t^{3}-t^{2}+2t+1
Square t^{2}-t-1.
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