- 计算a÷b÷1b÷c×1c的结果是______.
- 计算:x22y÷4x3y2=______.
- 计算a2÷b×1b÷c×1c÷d×1d=______.
- 计算2a2bx÷2xb的结果是______.
- 化简:3xy2÷6y2x.
- (2a2b)2÷4ac23b2.
- 计算÷ax的结果正确的是( ) A. B. C. D.
- 计算:x2-8x+164-x2÷16-x24+4x+x2.
- (1)化简:(x+2x2-2x)÷x-22(2)解方程:16x-2=12+21-3x.
- 16xyy2•y22x.
- (-2ab)3•ab23a.
- 计算:(1)3a-2b•2ab-2(2)(-ab)2÷(2a25b)2•a5b.
- (1)化简xx2-1•x2+xx2(2)已知x=-3,求(1-1x)÷x2-2x+1x的值.
- 计算:aa-2-2a-2=______;3ab•b23a=______.
- 化简:a2-b22ab÷(a+b)=______.