Example: See 9π‘ŽΒ² βˆ’ 4𝑏² as (3π‘Ž)Β² βˆ’ (2𝑏)Β² and recognize it as a difference of squares that can be factored as (3π‘Ž βˆ’ 2𝑏)(3π‘Ž + 2𝑏).

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