Question

(a-b)^2 formula proof​

Answer 1

Answer:

a²-2ab+b²

Step-by-step explanation:

$= > {(a - b)}^{2} \\ \\ = > (a - b)(a - b) \\ \\ = > a(a - b) - b(a - b) \\ \\ = > {a}^{2} - ab - ab + {b}^{2} \\ \\ = > {a}^{2} - 2ab + {b}^{2}$

Answer 2

Answer:

(a-b) ^2

= (a-b) (a-b)

= a(a-b) - b(a-b)

= a^2 - ab - ab + b^2

= a^2 +b^2 - 2ab