It is known that AB is opposite to each other, CD is negative reciprocal to each other, X is the number with the smallest absolute value, and Y is the largest negative integer. Find 2009 (a + b) - (CD) 2-2y (CD) to the second power

It is known that AB is opposite to each other, CD is negative reciprocal to each other, X is the number with the smallest absolute value, and Y is the largest negative integer. Find 2009 (a + b) - (CD) 2-2y (CD) to the second power

AB is opposite to each other, a + B = 0
CD is reciprocal, CD = 1
X is the number with the smallest absolute value, x = 0
Y is the largest negative integer y = - 1
2009 (a + b) - (CD) 2 power-2y
=2009 × 0 - (1) 2nd power - 2 × (- 1)
=1