Explains proof of the algebraic identity for the square of a trinomial (a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca

Lesson Outcomes

• At the end of this lesson, the student will be able to:
• Define algebraic identity
• Learn the proof of an algebraic identity for the square of a trinomial (a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca
• Simplify any given expression which is the form (a + b + c)²