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My First formula is a<sup>2</sup>+b<sup>2</sup>+2ab<br>
My Second formula is a<sup>2</sup>+b<sup>2</sup>-2ab<br>
My third formula is a<sup>3</sup>+b<sup>3</sup>+3a<sup>2</sup>b+3ab<sup>2</sup><br>
My Four formula is a<sup>3</sup>-3a<sup>2</sup>b+3ab<sup>2</sup>-b<sup>3</sup>
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