(2012•工业园区一模)先化简再求值:x−1x+(x−2x−1x)
(2012•工业园区一模)先化简再求值:x−1x+(x−2x−1x)
(2012•工业园区一模)解不等式组3x−15≤2x−10x−1<92x+6
(2012•工业园区一模)解方程:x
(2012•广陵区二模)先化简再求值:(3x−1−x−1)÷x−2x
先化简,再求值:(x−1x−x−2x+1)÷2x
先化简,再求值:(x−1x
先化简再求值:(1x+2−1)÷x
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
先化简再求值 x-1分之4(x-x)+(x-2)
求值:x(x+2y)-(x+1)2+2x,其中x=125,y=−25
(2014•沙坪坝区一模)先化简,再求值:(2x−x
化简求值:(3x−1−x−1)÷x−2x