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Quadratic equations describe the motion of a baseball after it connects with a bat, and the acceleration of gravity at the Earth's orbit.

The image above illustrates which identity?

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Arron Kau**

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Calvin Lin**

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Suppose that 6 is one of the roots of quadratic equation \( x^2-2x+a=0\). What is the other root?

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Stanley Guo**

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Chung Kevin**

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What are the solutions to the equation

\[ x^2 = 4 ? \]

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Calvin Lin**

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