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| Hi. Mr. Clay, how are you? You look nice today. | |
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| Hello Lamar. I'm doing fine.& Thank you. Are you trying to push up on me so you won't have to do my math homework? | |
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| No sir, not all. *starts to mumble* | |
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| Well, do you need anything? | |
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| Yes, I need you to explain Pythagorean identities. | |
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| An "identity" is an equation which is always true. These can be "trivially" true, like "x = x" or usefully true, such as the Pythagorean Theorem's "a2 + b2 = c2" for right triangles. | |
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