0.7:2.1=0.5:X 3/1:X=4:12求解比例.
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0.7:2.1=0.5:X 3/1:X=4:12求解比例.
0.7:2.1=0.5:X 3/1:X=4:12求解比例.
0.7:2.1=0.5:X 3/1:X=4:12求解比例.
0.7:2.1=0.5:X
0.7X=1.05
X=1.5
3/1: X=4:12
4X=4
X=1
内项乘内项 外项乘外项
0,7X=2,1x0,5
0,7X=1,05
X=1,5
X=1.5
X=9
1.5和9
(X+1)X(X+2)X(X+3)=504
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
(x+2)(x-1)+(x+3)(x+1)=x·x-1 求x (5x-4)(2x+5)(3x-6)(2x-4)=(2x-4)(2x+5)·0.5 求x
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
8x-5.5x=7.57.2x÷3.6=2 3x+6x-8x=0.7 12x-2x-5x=4.512x-x=0 5x+x=1.8 3.2x+1.8x=64.8x-0.8x=6 6.3-0.3x=9.6 8.6x-8.5x=0.720x-2x=36 9x+6x=4.5 18x-12x=5.42x-1.6x=3.6 18x+3x=7×6 1.2x-0.5x=0.71.3x+2.7x=1 4x-3.2x=6.4 0.8x+3.2x+3x=562.8x-2x=7.2
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
12x-2/21x=快点9点之前还有7x-x+2/3x-3(4x-0.5)-2x+(3x-1)-(x+5)
0.5x(x+2)=1-x(3-.05x) X=?
(X-4)(x-2)-2(X-1)(X+3)其中X=-0.5
1.(x*2-3x+3)/(x*2-3x+2)-(x*2-5x+7)/(x*2-5x+6)-1/(x*2-4x+3)2.1/x(x+1)+2/(x+1)(x+3)+3/(x+3)(x+6) 3.已知:x*2-3x+1=0,求x*2+1/x*2.
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002