2x(x-3)-(x-3)(x+6)=x²+12
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
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2x(x-3)-(x-3)(x+6)=x²+12
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x
解方程:x(6-x)-2x(x+1)-(x^3-3x^4)/x²=4
已知(x-2)(x²-6x-9)=x(x-5)(x-3),求6x的算术平方根
约分 (X的平方+4x+3)(2x-x)^/(X^+X)(X^+X-6),
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x