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SMO 2012 Senior Round 1 Question 11

SMO · SMO 2012 Senior Round 1

Question 11

Four distinct positive real numbers $a,b,c,d$ satisfy
$$(a^{2012}-c^{2012})(a^{2012}-d^{2012})=2011,$$
$$(b^{2012}-c^{2012})(b^{2012}-d^{2012})=2011.$$
Find $(cd)^{2012}-(ab)^{2012}$.