解方程组:(1)1/2*(5-5X)^2=50(X+1)^2 (2)X^2-4=2(2X-X^2)+3
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
解方程组:(1)1/2*(5-5X)^2=50(X+1)^2 (2)X^2-4=2(2X-X^2)+3
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解方程组 3(x-1)+1>5x-2(1-x) 5-(2x-1)
10/x+y+3/x-y=-5 15/x+y-2/x-y=-1(用换元法解此方程组)