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If a and B are opposite to each other, C and D are reciprocal to each other, and the absolute value of a is equal to 2 Seek: 2011 a + B + 2012cd + 2 1a
If a and B are opposite to each other, then a + B = 0C, if D is reciprocal to each other, then CD = 1 / A / = 2, then a = ± 2. When a = 2, (a + b) / 2011 + 2012cd + A / 2 - is this? = 0 / 2011 + 2012 × 1 + 2 / 2 = 2012 + 1 = 2013 when a = - 2, (a + b) / 2011 + 2012cd + A / 2 = 0 / 2011 + 2012 × 1-2 / 2 = 2012-1 = 2011
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