赚现金
化简: (aa-1+5a+9a2-1)÷a+3a-1.
化简: (a+2a2-2a-a-1a2-4a+4)÷a-4a.
计算:
(1) (x+y)2+y(3x﹣y);
(2) (4-a2a-1+a)÷a2-16a-1;
(1)计算: π0+2cos30°−|2−√3|−(12)−2;
(2)化简: (2−x−1x+1)÷x2+6x+9x2−1.
计算 (m+2−5m−2)÷m−32m−4.
(1)化简 x−1x÷(x−1x).
(2)解方程: 2x2x−1+51−2x=3.
(1)计算: sin30°+(2018−√3)0−2−1+|−4|;
(2)化简: (1−2x−1)÷x−3x2−1.
化简: (1+2a−1)÷a2+2a+1a−1.
(1)计算: √8−(3.14−π)0−4cos45°
(2)化简: x2x−1÷xx2−1−x
(1) 2−2+3√8−2sin60°+|−√3|
(2)化简: (1−1x+1)÷xx2−1
(1)计算 (2017−π)0−(14)−1+|−2|
(2)化简 (1−1a−1)÷(a2−4a+4a2−a).
化简: x−2x+1·(1+2x+5x2−4).
化简: 1a-1-1a2+a÷a2-1a2+2a+1
化简: (2a2+2aa2−1−a2−aa2−2a+1)÷2aa−1.
计算: (2a+1+a+2a2-1)÷aa-1.
试题篮