math mode - How to get big curly braces for an equation with 3

I am very new to LaTeX. I want to display this: How should I go about doing this?

m.media-/images/I/617CQVhIEcL._AC_UF1000

Tutorial - Mathematical Equations in LaTeX

math mode - Right curly brace near the equation number - TeX

The Math Equation That Tried to Stump the Internet - The New York Times

Algebra – expand three brackets Mathematics, Learning and Technology

Mathcha Editor

Mathematical expressions - Overleaf, Online LaTeX Editor

equations - Curly braces and nested arrays - TeX - LaTeX Stack

Writing Math Equations in Jupyter Notebook: A Naive Introduction, by Abhay Shukla, Analytics Vidhya

Obsidian improperly renders large brackets in LaTeX math mode