计算 (1) (2)
(本小题满分7分)计算:.
计算:∣–5∣+3sin30°–(–)2+(tan45°)–1
计算:.
计算:(1)(2)
计算:(﹣1.414)0+()﹣1﹣+2cos30°.
(1)计算:; (2)因式分解:.
计算: - 1 3 - 1 + 2015 - 3 0 - 4 sin 60 ° + - 12
计算:
计算:(1)()-1-3tan60°+;(2)(a+2)(a-2)-(a-1)2.
计算:﹣2sin30°﹣(﹣)﹣2+(﹣π)0﹣+(﹣1)2012.
(1)计算:.(2)解方程:
计算:+2cos30°-()0-|-|