Question

(a-b-c)²
please tell me!​

Answer 1

Answer:

I hope this will help you

Answer 2

Answer:

Question :-

• (a - b - c)²

Answer :-

➪ (a - b - c)²

➻ (a - b - c) (a - b - c)

➻ a(a - b - c) - b(a - b - c) - c(a - b - c)

➻ a² - ab - ac - ab + b² + bc - ac + bc + c²

➻ a² + b² + c² - ab - ab - ac - ac + bc + bc

➻ a² + b² + c² - 2ab - 2ac + 2bc

∴ a² + b² + c² - 2ab + 2bc - 2ac