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Algebra: Equation of Circle, Terms and Coefficients

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1. Find the equation of the circle with the center C(7, -2) and radius square root 53.
2. Find the coefficient of the fifth term in the expansion of (x-y)15.
3. What is the fifth term in the expansion of (3a-b)6.

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Solutions to a variety of algebra problems are shown. The equation of circle, terms and coefficients are examined. The fifth term in the expansions are determined.

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1. Find the equation of the circle with the center C(7, -2) and radius square root 53.
The equation of a circle with radius r centered at the origin ...

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