Formula for (a+b) 3 and (a-b) 3. (a + b) 3 = a 3 + 3a 2 b + 3ab 2 + b 3 ; (a - b) 3 = a 3 - 3a 2 b + 3ab 2 - b 3. Roots of Quadratic Equation. Quick notes icon. Formula.
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