3x-2x(50-x)=30
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x+3x+x-2+x+x+50%x=188 求x
x-2/3x+x+2/7x=30
(x+1)+(x+2)+(X+3).+(x+50)=1325
3x-2x(50-x)=30
当2x=30x 3x=40x 4x=50x时 那么
(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+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x-2/5x-(x-2/5x)2/3-(2/5x-1/3x)=30求x
(x^2-3x+1) (x^2+3x+2)( x^2-9x+20)= -30求X
计算:(x+1)x=7 (x-1)(x+2)=30 (3-x)(3-x)+x=9
3/4x-20+15/50-2x*x+7/6x+30=0
4X+8.60x2=30 4X-X=39 7X+90x7=1463 3X-2+X=50 X=多少 (是小题,格式,
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
30-3(3-X)=4X 3X+12*6=15X+12 4X-2(50-X)=20 12(X-13)=10(X+3) 100-X=3(20+X)
(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