Theorem sq5

Description: The square of 5 is 25. (Contributed by SN, 26-Aug-2025)

	Ref	Expression
Assertion	sq5	$$⊢5^2=25$$

Proof

Step	Hyp	Ref	Expression
1		5cn	$$⊢5\in ℂ$$
2	1	sqvali	$$⊢5^2=5\cdot 5$$
3		5t5e25	$$⊢5\cdot 5=25$$
4	2 3	eqtri	$$⊢5^2=25$$