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View Thread: Math Quiz: 9 is number one
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    iStation

    algorith said:
    bureX said:
    *snip*

     That's right. 

    9(a^2 - ab) = (a^2 - ab)  → 0 = 0

     

    OK!
    Another one,

     

    lim x->0 [{sin(9x)}/x] = ?