45x+10 =50X(x-1)
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45x+10 =50X(x-1)
45x+10 =50X(x-1)
45x+10 =50X(x-1)
45x+10=50x2-50x
95x+10=50x2
50x2-95x-10=0
5(10x2-19x-2)=o
10x2-19x-2=o
b2-4ac=(19)2-4*10*(-2)=441>0 用Δ算
X1=21|20 X2=-21|20
45x+10 =50X(x-1)
45x+10=50(x-1)
x*x*x*x+2008x*x+2007x+2008(提示:x*x*x-1=(x-1)*(x*x+x+1))
解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x-
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
0.5X-30+1/3*[X-(0.5X-30)]+10+50=X
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)
x+(x-1)+(x+1)+(x+10)+(x-10)=440
(2x-2)(x-1)=0 x(x-5)=5x-10
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
解方程:(1)2x-19=7x+31 (2)20-2x=x-1 (3)19-x=100-10x (4)1/3x+5=2/3x-62x-19=7x+317x-2x=-19-31这里应该是31+19吧?5x=-50x=-50÷5x=-10
已知x除以(x*x-x+1)=7,求x*x除以(x*x*x*x+x*x+1)的值
=(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
=(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
50*2X=X*(50-X)*10
(x+x)+(x-x)+(x/x)=11.2