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Double Counting Area?

Geometry Level 1

$\Large 3^2 + 3^2 + 2^2 + 2^2 - 1^2 = \, ?$

4^2

5^2

6^2

7^2

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Excel in math and science

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It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

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by Chung Kevin

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