if f(f(X))=81

if f(f(X))=81. then. value of x=? when f(X)=2X-1+f(X-1). is not equal to zero and f(X=0)=0

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #50044

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