Description: The square of 5 is 25. (Contributed by SN, 26-Aug-2025)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | sq5 | ⊢ ( 5 ↑ 2 ) = ; 2 5 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 5cn | ⊢ 5 ∈ ℂ | |
| 2 | 1 | sqvali | ⊢ ( 5 ↑ 2 ) = ( 5 · 5 ) |
| 3 | 5t5e25 | ⊢ ( 5 · 5 ) = ; 2 5 | |
| 4 | 2 3 | eqtri | ⊢ ( 5 ↑ 2 ) = ; 2 5 |