Tutorial - resolving a bracket (Expand)

8 hours ago
11

Bracket is like a bag, sometimes we need the bag, sometimes we want to empty the bag.

The related concept video: https://rumble.com/v6zvuz4-technique-resolving-a-bracket-expand.html

The questions can be downloaded here: https://drive.google.com/file/d/1JW8uNLzSFl13Sk1wARbAsJ0uPdOAGxG7/view?usp=sharing

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