The Distributive Law

• 2(a + b) = 2a + 2b

• (a + b)2 ƒ a2 + b2

= a2 + 2ab + b2

• (a + b)/2 = a/2 + b/2

• log(a + b) ƒ log a + log b

= log a . log b

• sin (a + b) ƒ sin a + sin b

= ????????????

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