Simplification rules
By applying 4.21 Polynomin kertominen monomilla twice to a binomial, you can obtain the following simplification rules:
[[$$(a+b)^2=a^2+2ab+b^2$$]]
[[$$(a-b)^2=a^2-2ab+b^2$$]]
[[$$(a+b)^2=a^2+2ab+b^2$$]]
[[$$(a-b)^2=a^2-2ab+b^2$$]]