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Math formulas: Factoring and product formulas


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$$a^2 - b^2 = (a-b)(a+b)$$

$$a^3 - b^3 = (a-b)\left(a^2 + ab + b^2\right)$$

$$ a^3 + b^3 = (a+b)\left(a^2 - ab + b^2\right) $$

$$ a^4 - b^4 = (a-b)(a+b)\left(a^2 + b^2\right) $$

$$ a^5 - b^5 = (a-b)\left(a^4 + a^3b + a^2b^2 + ab^3 + b^4\right) $$

$$ (a + b)^2 = a^2 + 2ab + b^2 $$

$$ (a - b)^2 = a^2 - 2ab + b^2 $$

$$ (a + b)^3 = a^3 + 3a^2b + 3ab^2 + b^3 $$

$$ (a - b)^3 = a^3 - 3a^2b + 3ab^2 - b^3 $$

$$ (a + b)^4 = a^4 + 4a^3b + 6a^2b^2 + 4ab^3 + b^4 $$

$$ (a - b)^4 = a^4 - 4a^3b + 6a^2b^2 - 4ab^3 + b^4 $$

$$ (a + b + c)^2 = a^2 + b^2 + c^2 +2ab + 2ac + 2bc $$

$$ (a + b + c + ...)^2 = a^2 + b^2 + c^2 + ... + 2(ab + ac + bc + ... ) $$

Algebra formulas

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