State in geometric language, then prove (also geometrically): (a + b + c)² = a² + b² +c² + 2ab + 2ac+2bc (Note that you may refer to propositions in Book II)
State in geometric language, then prove (also geometrically): (a + b + c)² = a² + b² +c² + 2ab + 2ac+2bc (Note that you may refer to propositions in Book II)
ChapterP: Prerequisites
SectionP.1: Review Of Real Numbers And Their Properties
Problem 13ECP: Identify the rule of algebra illustrated by the statement. a. x+9=9+x b. 5x32=5x32 c....
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