x÷2+x÷0.25=9 = = = = 要有算式哦!
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x÷2+x÷0.25=9====要有算式哦!x÷2+x÷0.25=9====要有算式哦!x÷2+x÷0.25=9====要有算式哦!x÷2+x÷0.25=90.5x+4x=94.5x=9x=2
x÷2+x÷0.25=9 = = = = 要有算式哦!
x÷2+x÷0.25=9 = = = = 要有算式哦!
x÷2+x÷0.25=9 = = = = 要有算式哦!
x÷2+x÷0.25=9
0.5x+4x=9
4.5x=9
x=2
x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)2.2/3+x/(3x-1)=1/9x-3
化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4
(x+x)+(x-x)+(x*x)+(x÷x)=81
设f(x)=x+2÷x(x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
(x²-x+1)÷(x²-x-1)=(x²+x)÷(x²+x-2)解方程
先化简,再求值:9-x²/x²+6x+9÷x²-3x/2x+6-2/x²-x,其中x=6
X^2-3X-2=0,求( x - 2x-1/x )÷(x-1)/(x^2-2x)
(X+X)+(X-X)+(X*X)+(X/X)=100
计算:(-9x^2+3x)÷(-3x)=
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
若x等于它的倒数则(x-1)(x+2)/x-1÷x^2-9/x+3=
若x等于它的倒数则(x-1)(x+2)/x-1÷x^2-9/x+3=
f(x)=x^2+x (x
(x-1/x²+6x+9)÷(x²-1/x+3)=(x+1/2)
(x-1/x²+6x+9)÷(x²-1/x+3)=(x+1/2)
2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2