) 1.(x+2)*3=(X-1)*4 2.2x=(50-x)+40 3.30x=(9-x)*24
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/24 02:34:49
)1.(x+2)*3=(X-1)*42.2x=(50-x)+403.30x=(9-x)*24)1.(x+2)*3=(X-1)*42.2x=(50-x)+403.30x=(9-x)*24)1.(x+2)
) 1.(x+2)*3=(X-1)*4 2.2x=(50-x)+40 3.30x=(9-x)*24
) 1.(x+2)*3=(X-1)*4 2.2x=(50-x)+40 3.30x=(9-x)*24
) 1.(x+2)*3=(X-1)*4 2.2x=(50-x)+40 3.30x=(9-x)*24
(x+2)*3=(X-1)*4
3x+6=4x-4
4x-3x=6+4
x=10
2x=(50-x)+40
2x=50-x+40
2x+x=90
3x=90
x=30
30x=(9-x)*24
30x=216-24x
30x+24x=216
54x=216
x=4
1.
3x+6=4x-4
移项,得
3x-4x=-4-6
.∴ x=10
2.
2x=50+40-x
移项,得
3x=90
∴ x=30
3.
30x=216-24x
移项,得
54x=216
∴x=4
X1=-2
X2=30
X3=4
======================
过程:
3X-6=4X-4 -6+4=4X-3X X=-2
2X=90-X 3X=90 X=30
30X=9*24-24X 54X=9*24 X=4
已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10)
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
*-----------------------------------------------*| 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 ||
(X-3分之x-1-x分之x-4)除以x的平方+3x分之(x+3)(x-2),其中(x-1)(x-2)=0
1.(x+1)(2x-3)-(x-1)(x+2)=x.x+71.(x+1)(2x-3)-(x-1)(x+2)=x.x+72.(2x+1)(4x.x-2x+1)-2x(4x.x+1)=03.(x-3)(x+2)=x.x-16
1.(x²-9)/(x²+2x²+x)*(3x³+9x²)/(x³-3x),其中x=-1/32.2x/(x³+2x²+x)除以(x-1)/(x²+x),其中x=-23.(4x²-1)/(2-4x)除以(4x²+4x+1)/x,其中x=-1/4
1.(x²-9)/(x²+2x²+x)*(3x³+9x²)/(x³-3x),其中x=-1/32.2x/(x³+2x²+x)除以(x-1)/(x²+x),其中x=-23.(4x²-1)/(2-4x)除以(4x²+4x+1)/x,其中x=-1/4
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-
(1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1
(1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1
1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x
x+5/x+1-3x-3/x+5=8x+28/x^2+4X-5-2(x+5)/(x+1)-(3x-3)/(x+5)=(8x+28)/(x^2+4X-5)-2
2x-6/4-4x+x^2/(x+2)*x^2-4/3-x,其中x=-1
解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)
(x+2分之3x-x+2分之x)/x平方-4分之x(x-1)=4
解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x