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Step * 1 1 1 of Lemma square-is-zero

.....assertion..... 
1. x : ℝ
2. (x * x) = r0
3. x ≠ r0
⊢ x * x ≠ r0
BY
{ EAuto 1 }

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Latex:

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Latex:
.....assertion..... 
1.  x  :  \mBbbR{}
2.  (x  *  x)  =  r0
3.  x  \mneq{}  r0
\mvdash{}  x  *  x  \mneq{}  r0


By

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Latex:
EAuto  1

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