求分式(X^4-6X^3-2x²+18x+23)÷(x²-8x+15)的值
求分式(X^4-6X^3-2x²+18x+23)÷(x²-8x+15)的值
x²+y²+4x-8y+20=0,求分式x²-y²/xy的值
若18x²-45x=0,求代数式(15x²-18x+9)-(-3x²+19x-31)-8x的值.
若分式(X+1)(X-2)/x²-4的值等于零.求x的值.
1.当分式x(x-2)/x²+2的值为0 时,求x²/(x-5)-(x)/(x-2)+(1+x)/(
x/y=2,求分式x²-xy+3y²/x²+xy+6y²
若x/y=2,求分式(x²-xy+3y²)/(x²+xy+6y²)的值
分式加减法:化简:x²+9x/x²+3x+x²-9/x²+6x+9
已知x²+y²-4x+6y+13=0,求x²+2y/x²-3y²的值
化简分式:(x-3)(x²-4)/(x²+3x+2)(x²-4x+3)
(2mx²-x²+3x+1)-(5x²+4y²+3x)的值与x无关,求2m&su
(2mx²-x²+3x+)-(5x²-4y²+3x)的值与x无关,求2m&sup