3 Videos (but easier, I promise!)
Factorial
Pascal
Binomial Theorem
2 problems to bring to class:
1. Expand (2x - 5y)^3 using Pascal's triangle.
2. Find the second term in the expansion of (x + 2y)^16
Assignment (in case you are absent like Yancy!)
p688 # 14-22,49-51
p694 #11-18, 21-24
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