3x^-12x-2根号(x^-4x+7)+13=0
3x^-12x-2根号(x^-4x+7)+13=0
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
(根号x-1)+(根号2x-3)+(根号3x-5)+(根号4x-7)=5x-6
解方程:(x-根号3)=3x(根号3-x) x²-2(根号3+根号5)x+4根号15=0
(先化简后求值)(3x/x+2-x/x-2)+2x/x^2-4,x=4-根号5,
已知(x+根号二)/(x-2)÷(x²+4x+4)/(x²-4),其中x满足(x-2)(x+3)=0
已知(x-根号2+1)(x-3)=0,求代数式{[(x-1)/(x-3)]-[(x-4)/x]}/[(x的平方+x-6)
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
已知函数f(x)={根号x(x大于等于0),-x^2-4x (x
x^2+y^2-4x-6y+13=0,求(2/3根号9x+y^2根号x/y^3)-x^2根号1/x-5x根号y/x)的值
已知z=根号(3x-1)-x+(x^2-4x+3)i>0,求x=
(1)x平方+x-12=0(2)x平方-根号2x-四分之一=0(3)x平方-4x+8=2x+11 (4)x(x-4)=2