X-(X-2)×3/10-1/2X=2等于多少?
X-(X-2)×3/10-1/2X=2等于多少?
2/x-x+1/x=1 X等于多少
(-x)1(-x)2(-x)3(-x^4)等于多少
(x+1)(x+2)(x+3)(x+4)等于多少
1X+2X+3X…+98X+99X+100X=50500X X等于多少?
-2x²-3x² 等于多少?
2x²-3x-1=0 x等于多少?
(x-1)(x-2)(x-3)(x-4)=0,求x等于多少,
4x-3(x-5)=2x+(x-1) x等于多少
1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+9)(x+10)=2,x等于多少?
x-2[x-3(x+4)-5]=3{2x-[x-8(x-4)]}-2等于多少
2x(5x+3)=3x(5x+3x)中x等于多少