Answer:
[tex]a {}^{2} - 2ab + b {}^{2} [/tex]
Step-by-step explanation:
[tex](a - b) (a - b) \\ a {}^{2} - ab - ba + b {}^{2} \\ a {}^{2} - 2ab + b {}^{2} [/tex]
a^2 - 2ab + b^2
(a−b)(a−b) is known as a special product. Either memorize the product, a^2 - 2ab + b^2, or use the FOIL method to expand (a−b)(a−b).
