Question

(a-b)²= a² - 2ab + b² prove it​

Answer 1

To prove : -

• (a-b)²= a² - 2ab + b²

Proof : -

LHS = (a - b)²

→ (a - b)(a - b)

→ a(a - b) - b(a - b)

→ a² - ab - ba + b²

→ a² + b² - 2ab = RHS

• Hence LHS = RHS proved