(1)x^2+x-5=0 (2)x^2-(3/2)x+3=0
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 16:00:47
(1)x^2+x-5=0(2)x^2-(3/2)x+3=0(1)x^2+x-5=0(2)x^2-(3/2)x+3=0(1)x^2+x-5=0(2)x^2-(3/2)x+3=0嬲,这么容易(1)公式法a
(1)x^2+x-5=0 (2)x^2-(3/2)x+3=0
(1)x^2+x-5=0 (2)x^2-(3/2)x+3=0
(1)x^2+x-5=0 (2)x^2-(3/2)x+3=0
嬲,这么容易(1)公式法a=1 b=1 c=-5 b^2-4ac=21 所以x1 x2 =2a/-b+根号下面b^2-4ac=1+-根号21 (2)这题也用公式法,好解
*-----------------------------------------------*| 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 ||
5/x^2+x - 1/x^2-x=0
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值,
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
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-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
如果X*X--1=0,那么X*X*X+2*X*X+2008=几?
已知x*x+x-1=0 求x*x*x-2x+11=?
已知x*x+x-1=0求x*x*x-2x+2010的值
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-[1/5x*x-2x-5]的值.
已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-1/5x*x-2x-5的值.
若x^3+x^2+x+1=0,求代数式1+x+x^2+x^3+x^4+x^5+...+x^2006+x^2007的值
f(x,-x)=x^2+2x,fx(x,-x)=5x+1,则fy(x,-x)=
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002