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(1)化简求值: 2 x x + 1 + 4 - 2 x x 2 - 1 ÷ x - 2 x 2 - 2 x + 1 ,其中 x=﹣2 2+2sin45°+|﹣3|;
(2)解不等式组: x - 3 ( x - 2 ) ≤ 8 ① 2 x - 1 5 > x + 1 2 - 1 ② ,并求其非负整数解.
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