SET OF GEOMETRICAL OBJECTS AND METHOD TO EXPLAIN ALGEBRAIC EQUATIONS

摘要

A set of geometrical objects comprising square prism (420); square prism (460); rectangle prism (465); three square prisms (530); cube (440), cube (550), cube and (590); rectangle prism (490); two rectangle prisms (470); rectangle prism (475); two rectangle prisms (500); two rectangle prisms (510); and four rectangle prisms (600) and a method for explaining algebraic equations (a + b)2 = a2 + 2ab + b2; (a - b)2 = a2 - 2ab + b2; (a + b + c) 2 = a2 + b2 + c2 + 2ab + 2bc + 2ca; (a + b)3 = a3 + b3 + 3a2b + 3ab2; (a + b) x (a b) = a2 b2; and (x + y)2 (x y)2 = 4xy.