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Series and Summation Notation - Problem 4

Teacher/Instructor Alissa Fong
Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

If a number pattern is geometric or arithmetic, then we have formulas to use as shortcuts for finding the sums. However, if the pattern is neither geometric nor arithmetic, but has an x - squared term, then you can try using the shortcut formula. Here we do a quadratic sum both by hand and also using the formula.

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