It is known that A. B is opposite to each other and C. D is reciprocal to each other. And y + 1 = 5, find Y2 + (a + B + CD) 2010 + (- CD) 2009 =?

a. B is opposite to each other, C and D are reciprocal to each other, and y + 1 = 5
Then a + B = 0, CD = 1, y + 1 = ± 5, y = 4 or - 6
y2+(a+b+cd)2010+(-cd)2009
=y²+1-1
=y²
=16 or 36

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