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For non-negative integers a and b, where a and b are both greater than or equal to 2, simplify the following:
 

 

\(\binom{a + b}{2} - \binom{a}{2} - \binom{b}{2}.\)

 Mar 3, 2023
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\(\binom{a + b}{2} - \binom{a}{2} - \binom{b}{2} = a + b + 1\)

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 Mar 3, 2023

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