Question

what should be added to 4c² - 3b² + 1 to get a² + b² +c²​

Answer 1

let x is added

according to the question

4c² - 3b² + 1 + x = a² + b² +c²

x = a² + b² +c² - (4c² - 3b² + 1)

x= a² + b² +c² - 4c² + 3b² - 1

x= a² + 4b² - 3c² - 1

hence a² + 4b² - 3c² - 1 added to 4c² - 3b² + 1 to get a² + b² +c²