A Plus B Squared
This example demonstrates how the expression can be interpretted geometrically. The square can be drawn and the subareas computed to come up with the result of a plus b squared.
Steps

Expand initial expression. Geometrically this can be represented as a square with sides of length .

Multiply and distribute values across. Geometrially, each term corresponds to the subarea of the square.

Combine like terms.

Result.