# Algebra Formulas

Basic Algebraic Formulas
• (A + B)2  =  A2 + 2AB + B2
• (A - B)2  =  A2 - 2AB + B2
• (A + B)2 + (A - B)2  =  2(A2 + B2)
• (A + B)2 - (A - B)2  =  4AB
• A2 - B2  =  (A + B) (A - B)
• (A + B + C)2  =  A2 + B2 + C2 + 2AB + 2BC + 2CA
• (A - B - C)2  =  A2 + B2 + C2 - 2AB + 2BC - 2CA
• (A + B)3  =  A3 + 3A2B + 3AB2 + B3
• (A - B)3  =  A3 - 3A2B + 3AB2 - B3
• A3 - B3  =  (A - B) (A2 + AB + B2)
• A3 + B3  =  (A + B) (A2 - AB + B2)
• (A + B + C)3  =  A3 + B3 + C3 + 3(A + B) (B + C) (C + A)
• (A + B)4  =  A4 + 4A3B + 6A2B2 + 4AB3 + B4
• (A - B)4  =  A4 - 4A3B + 6A2B2 - 4AB3 + B4
Quadratic Equation Formula ax2 + bx + c = 0

## Algebra Formulas Reference

Algebra formulas reference is the collection equations the study of solving equations and expressions. This formulas cheatsheet includes finding the unknown variables in the expressions, equations and more. It is a complete list of algebraic formulas to prepare student for the study of mathematics involving system of equations and expressions.