14x-2(3+1.5x)=6
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
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?
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100
(x^3)^()*x^2=x^14
解方程:2x+1.5x=17.5 8x-3x=105 3x+x+6=26
2x+1.5x=17.5 8x-3x=105 3x+x+6=26 怎么解
(x+2)(x-3)(x-6)(x-1)=0
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
x-1=3x+3 x-3=12-4x 6x-14=5x-10 x+1=2-4x
已知x^2-3x=2x+14求(4x^3-6x^2+2x)÷(2x)-(x+1)^2+1的值