Description: The square of 8 is 64. (Contributed by SN, 26-Aug-2025)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | sq8 | ⊢ ( 8 ↑ 2 ) = ; 6 4 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | 8cn | ⊢ 8 ∈ ℂ | |
| 2 | 1 | sqvali | ⊢ ( 8 ↑ 2 ) = ( 8 · 8 ) | 
| 3 | 8t8e64 | ⊢ ( 8 · 8 ) = ; 6 4 | |
| 4 | 2 3 | eqtri | ⊢ ( 8 ↑ 2 ) = ; 6 4 |