In Exercises 6374, use the product-to-sum formulas to write the product as a sum or difference.

Lecture 22 Monday, October 12, 201512:04 PM PHCL 2600 Page 1 PHCL 2600 Page 2 PHCL 2600 Page 3 PHCL 2600 Page 4 PHCL 2600 Page 5 PHCL 2600 Page 6 Lecture 23 Tuesday, October 13,...