(2X-50):(X+50)=80:(X-80)怎么解
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(2X-50):(X+50)=80:(X-80)怎么解(2X-50):(X+50)=80:(X-80)怎么解(2X-50):(X+50)=80:(X-80)怎么解(2X-50):(X+50)=80:(
(2X-50):(X+50)=80:(X-80)怎么解
(2X-50):(X+50)=80:(X-80)怎么解
(2X-50):(X+50)=80:(X-80)怎么解
(2X-50):(X+50)=80:(X-80)
(X+50)*80=(2X-50)(X-80)
80X+4000=2X^2-210X+4000
X^2-145X=0
X(X-145)=0
X=0或X=145
2(x-25)/(x+50)=80/(x-80)
(x-25)/(x+50)=40/(x-80)
(x-25)*(x-80)=40*(x+50)
x^2-80x-25x+2000=40x+2000
x=0或145
x+3x+x-2+x+x+50%x=188 求x
x+ x+(x*50%)=1.5X?
(x+1)+(x+2)+(X+3).+(x+50)=1325
(60-X)(80-X)=(50-X)2-200吗那你认为（60-x）（80-x）=?
10x+2x*[(50-x)/2]+5x[(50-x)/2]=240
30x+20x-x^2=50x-x^2 怎么算
50X=200+X*X
30%x=50%x-20x
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)...(x-49)等于多少?
=(x^2-5x)^2+10(x^2-5x)+24 =x^4-10x^3+25x^2+10x^2-50x+24 这是怎么转化的(X-1)(X-2)(X-3)(X-4) =(X-1)(X-4) (X-2)(X-3)=（x^2-5x+4)(x^2-5x+6)=(x^2-5x)^2+10(x^2-5x)+24=x^4-10x^3+25x^2+10x^2-50x+24=x^4-10x^3+35x^2-50x+24
80%X*(1+50%)=10+X 求X是多少?
90/(x-90)=(2x-50)/(x+50)
50*2X=X*（50-X）*10
50/(x-50)=(x+18)/(2x-18)
=（x^2-5x+4)(x^2-5x+6) =(x^2-5x)^2+10(x^2-5x)+24 是怎么转化的(X-1)(X-2)(X-3)(X-4) =(X-1)(X-4) (X-2)(X-3)=（x^2-5x+4)(x^2-5x+6)=(x^2-5x)^2+10(x^2-5x)+24=x^4-10x^3+25x^2+10x^2-50x+24=x^4-10x^3+35x^2-50x+24不好意思我弄错了，是=（x^2-5
x/50-4=x/60+2 x=?
2乘(50-x)-1.6x=17.2 x=?
3x-2x(50-x)=30