计算:
(共计8分)计算: (1)+(﹣2013)0﹣()﹣1+|﹣3| (2)÷﹣×+.
()-3-22×0.25-+(
计算: (1) (2)
计算:.
计算: (1)(π﹣3)0+﹣2cos45°﹣ (2)若x+=3,求的值.