南海岛礁扩建工程:2/2x-1,4/4x^2-1的最公简分母是?
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2/2x-1,4/4x^2-1的最简公分母是?
x-1/x-3,x+1/x-1的最简公分母是?
x-1/x-3,x+1/x-1的最简公分母是?
2/2x-1,4/4x^2-1的最简公分母是(2x-1)(2x+1)
x-1/x-3,x+1/x-1的最简公分母是(x-3)(x-1)
计算[(x-1)/(x-2)-(x-2)(x-3)-(x-3)/(x-4)+(x-4)(x-5)]/(2x-7)
已知x+1/x =4,则x^2/x^4+x^2+1
(x-4)(x-2)-(x-1)(x+3),其中x=-2/5
已知X/(X^2-X+1)=7,求X^2/(X^4+X^2+1)的值
求和:1/[(x+1)(x+2)]+1/[(x+2)(x+3)]+1/[(x+3)(x+4)]+1/[(x+4)(x+5)]
1/(X+1)X+1/(X+1)(X+2)+1/(X+2)(X+3)+1/(X+3)(X+4)=?
方程(x+1/x+2)+(x+2/x+3)=(x+3/x+4)+(x+4/x+5)的解
X*X-2X-1=0 求2x*x*x-3*x*x-4*x+2
解方程(x+1)(x+2)(x+3)(x+4)=(x+1)(x+1)+(x+2)(x+2)+(x+3)(x+3)+(x+4)(x+4)
(x+1)(x+2)(x+3)(x+4)=(x+1)(x+1)+(x+2)(x+2)+(x+3)(x+3)+(x+4)(x+4)