Question

factorise 4a² - (2b - c)² by identy 3rd a² - b² = a+b a-b​

Answer 1

Step-by-step explanation:

4a² + 3b² +12c² - 4√3 ab - 12 bc + 8 √3 ac

= (2a)² +(-√3b)² + (2√3c)² + 2 × 2a × (-√3)b + 2 × (-√3)b × (2√3)c + 2 × 2√3 c × 2a

Using Identity :

Using Identity : (a+b+c)² = a² + b² + c² + 2ab + 2bc + 2ca

= (2a -√3b + 2√3c)²

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Answer 2

Step-by-step explanation:

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