Once there was a king called David. He lived in a golden place with his 1. He was rich, but he still loves 2 very much.

    One day, a god called Gory got lost and woke up in the garden of David's place. The king 3 him for some days. Gory was very grateful (感激的) and 4 to give David anything he wanted. David was happy and said, "I would like everything I touch to turn into gold."

    At first David was very 5. He touched a table and it became gold. But as he reached out for an apple, it turned into gold and he couldn't 6 it. David became scared. At that moment, his daughter entered the room. David rushed over to hug her. Suddenly, he realized that his daughter was a 7, golden statue (雕像). David cried 8. Then he turned to Gory. Gory told him to go down to the river and wash his 9. David did as what Gory told. Then he returned to the 10. He found everything changed back when he touched the gold.

    From then on, David didn't care for gold any longer.

用配方法解方程：x²﹣4x+2=0，下列配方正确的是（  ）

请阅读下列材料：若两个正实数a₁，a₂满足a₁²＋a₂²＝1，那么a₁＋a₂≤ $\sqrt{2}$ .

证明：构造函数f(x)＝(x－a₁)²＋(x－a₂)²＝2x²－2(a₁＋a₂)x＋1，因为对一切实数x，恒有f(x)≥0，所以Δ≤0，从而得4(a₁＋a₂)²－8≤0，所以a₁＋a₂≤ $\sqrt{2}$ .

根据上述证明方法，若n个正实数满足a₁²＋a₂²＋…＋a_n²＝1时，你能得到的结论为____．