仙舞魅凰盛世倾心:X-3/2-2X+1/3=1怎么解?
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X-3/2-2X+1/3=(1-2)X-(3/2-1/3)=-X-7/6=1
X=-1/6
计算[(x-1)/(x-2)-(x-2)(x-3)-(x-3)/(x-4)+(x-4)(x-5)]/(2x-7)
x*(x/3)=(x-5)*(x/3+1)/2 x=?
f(x)=2x(x-1)/(2x-3) x>2求最小值
(x-4)(x-2)-(x-1)(x+3),其中x=-2/5
[(X-2)^3*(X+3)]/(X+1)<0
(x+1/x+2)-(1/x+7)=(x+2/x+3)-(1/x+6)
[(x^3-x^2)/(x^2-x)]-[(1-x^2)/(x+1)]的最简公分母是?
(x^3-x^2)/(x^2-x)-(1-x^2)/(x+1)的最简公分母是什么?
1/(X+1)X+1/(X+1)(X+2)+1/(X+2)(X+3)+1/(X+3)(X+4)=?
求和:1/[(x+1)(x+2)]+1/[(x+2)(x+3)]+1/[(x+3)(x+4)]+1/[(x+4)(x+5)]