vì |x-2010|\(\ge\)0

(y+2011) ²⁰¹⁰\(\ge\)0

=>|x-2010|+(y+2011) ²⁰¹⁰\(\ge\)0

=>A=|x-2010| + (y+2011) ²⁰¹⁰ +2011 \(\ge\)0+2011

dấu "=" xảy ra khi |x-2010|=(y+2011)²⁰¹⁰=0

<=>x=2010 và y=-2011

vậy A_min=2011 khi x=2010 và y=-2011

Once upon a time, there were two brothers who died early. When my brother married, he did not want to live with me again, so decided to divide the fortune. The greedy family occupied the house, the garden, the cows and buffalos of the parents, leaving only a small hut and a garden, including a sweet potato. The children do not complain, day care for the trees and plowing rent, hoe feeding.

In that year, the tree in the garden of his sister suddenly strange results, branches are all fruit, sweet fruit, yellow hair. He looked at the tree that heart warmly embrace the idea of ​​selling the money for rice.

One day, there was a bird from Phoenix flying to eat slaughtering. Seeing that, the younger man put on a bird stalk and said. "Hey birds! I only have one car, and I have been hard to care to pick fruit. Now if the birds eat all I have nothing to sell to buy rice. So if the bird wants to eat bring something worthwhile.

Birds just eat and reply: "Eat a fruit, return the gold bag to three bags, carry that." The children heard birds say so, also for birds to eat. A few days later, birds came to eat. Eat bird finished to tell his brother to get three bags of gold to get. The younger brother ran into the house and took a bag of three cast iron ready to climb on the back of the bird.

Birds fly forever, flying through the high mountains, across the vast ocean and landed on an island full of gold, jewelry. My brother went all over the island watching the delight and took the gold bag filled with three gangs. The Phoenix asked for more, the brother did not take. Finished, the brother climbed up his bird back home.

An investigation wine manga slot

From then on, the younger brother became rich, his younger brother brought rice, rice, gold and silver to help the poor. He heard that he was rich and went to play and demanded to change his house, his garden with a sweet carp, his brother also agreed to exchange for him. So he moved to his sister. Next year, the tree again wrongly bear fruit, birds Phoenix came to eat. He pretended to weep, the bird said: "Eat a fruit, return the gold bag in three bags, carry it."

He was so happy, urged his wife to bag not 3 cast iron but 12 cast iron to hold more gold. The next day the Phoenix bird took his brother to collect gold. Just arrived, his brother rushed gold grabbed in the bag, also added more gold put in person. Birds try to fly, but the road is far away, so gold is too heavy. Several times the bird told his brother to throw away the light gold but his brother insisted on holding the bag. The Phoenix bird exasperated, and he threw his cock into the sea.

Co so cac so chan la : 

9 + 1 = 10 ( so )

Co tat ca 9 khoang cach bang 2 va 1 khoang cach bang 1 

Hieu cua 2 so la :

2 x9 + 1 = 19 

So be la : ( 2001 - 19 ) : 2 = 996

So lon la : 996 + 19 = 1015