0.3:2X=1:650—X/4=0.8:1/249:(10—X)=14:21/15:1/5=1/X:1/3
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/08 15:17:15
xݓn@_e%RY4e9Ky $C+&\
DqR:ɯ[Ԯāx淳q{6zٶZ'T3ġO4ݴ#"W#&hĒG4*-}\ˉIurR[u0qGTQl5{NR6{3
h1[MbR.TF}3(ڋn(W:
i@)FCd;zd7us)"XoLL`azngp=pjg{ =AW.^^)s@Tv eI h0eACСkOC5zTT;}0~j|ϖ-+3Պt6_-3q8H)[NẌ́tGÃo|v3f/cAG~yM" ˳{MqJGgq4~R,8 \ ۯ
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/x-2)+(2/x*2+2x)-(x+6/x*2-4)化简,=x^2/x(x-2)+(2x-4)/x(x^2-4)-(x^2+6x)/x(x^2-4)=x^2/x(x-2)-(x+2)/x(x-2)=(x-2)(x+1)/x(x-2)=(x+1)/x
(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
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)
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
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
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
1.用公式计算:COSX=1-X*X/2!X*X*X*X/4!-X*X*X*X*X*X/6!.直到最后一项的绝对
x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42
(x^2+x-1)(x^2+x+2)=4
(X+4)(x-2)(x-4),其中x=-1
0.3:2X=1:650—X/4=0.8:1/249:(10—X)=14:21/15:1/5=1/X:1/3
(x-2)(x+1)(x+4)(x+7)=19
(x+1)(x+2)(x+3)(x+4)=24
(x-1)(x-2)(x-3)(x-4)=48