EN(seq. 75)
Facsimile
Transcription
Status: Complete
[Triangle figure]
20 x 13 x 11
[equation] ——²
20² — x + 11 = 13²— x
x + 11
400 — x² + 11x
11x + 121
400 — x² + 22x + 121 = 169 — x
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