Question

How do you write the product (a-b)^2

Answer 1

`(a-b)^2=(a-b)\cdot(a-b)`

using distributive property:

`(a-b)\cdot(a-b)=a^2-ab-ba+b^2`

Add like terms:

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