Khan Academy Static

An identity is an equality, which is true for all values of the variables in the equality. Here we will learn three standard identities- (a+b)^2=a^2+b^2+2ab, (a-b)^2=a^2+b^2-2ab, (a+b)(a-b)=a^2-b^2.

8562_Special_products_of_binomials_two_variables.html

8560_Special_products_of_the_form_ax_b_ax_b_.html

8561_Squaring_binomials_of_the_form_ax_b_.html

8559_More_examples_of_special_products.html