diff --git a/units/en/unit1/rl-framework.mdx b/units/en/unit1/rl-framework.mdx
index b8e50d9..d5d62ab 100644
--- a/units/en/unit1/rl-framework.mdx
+++ b/units/en/unit1/rl-framework.mdx
@@ -12,8 +12,6 @@ To understand the RL process, let’s imagine an agent learning to play a platfo
 
 <img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit1/RL_process_game.jpg" alt="The RL process" width="100%">
 
-\$\sqrt{2}\$
-
 - Our Agent receives **state  \\(S_0\\)** from the **Environment** — we receive the first frame of our game (Environment).
 - Based on that **state \\(S_0\\),** the Agent takes **action \\(A_0\\)** — our Agent will move to the right.
 - Environment goes to a **new** **state \\(S_1\\)** — new frame.