2100x+2500(50-x)=90000
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2100x+2500(50-x)=900002100x+2500(50-x)=900002100x+2500(50-x)=9000021x+25(50-x)=90021x+1250-25x=900-4
2100x+2500(50-x)=90000
2100x+2500(50-x)=90000
2100x+2500(50-x)=90000
21x+25(50-x)=900
21x+1250-25x=900
-4x=-350
x=175/2
2100x+2500(50-x)=90000
(x+x)+(x-x)+(x/x)=11.2
x+ x+(x*50%)=1.5X?
x*x*x*x+2008x*x+2007x+2008(提示:x*x*x-1=(x-1)*(x*x+x+1))
(30+2X)x(50-X)=2100
(50+2x)(50-x)=2100
50*2X=X*(50-X)*10
(30-x)+x+(25-x)=50求过程,
45x+10 =50X(x-1)
50x+100(35-x)=2500 方程解 50x+100(35-x)=2500方程解
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
(30+2X)x(50-X)=2100一元二次方程
X除以(X+50)=98
x+3x+x-2+x+x+50%x=188 求x
(X+X)+(X-X)+(X*X)+(X/X)=100
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
50X=200+X*X
30%x=50%x-20x