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Proof step 15 from proof square-sqrt-02 (previous step)

dec = mkDecimal(dec.int, dec.scale), j * j = dec.int, dec.scale = j0 * 2 ⊦ mkDecimal(abs(j) * abs(j), 2 * abs(j0)) = dec

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information