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Algebra Formulas & Tools
Essential algebraic formulas, calculators, and equation solvers.
Cheat Sheet
Quadratic Equation
Standard Form: ax² + bx + c = 0
Formula: x = [-b ± √(b² - 4ac)] / 2a
Expansion Formulas
(a + b)² = a² + 2ab + b²
(a - b)² = a² - 2ab + b²
(a + b)(a - b) = a² - b²