(x/x+2+x/2-x)*x^2-4/x 急..计算题.
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/22 17:17:24
(x/x+2+x/2-x)*x^2-4/x急..计算题.(x/x+2+x/2-x)*x^2-4/x急..计算题.(x/x+2+x/2-x)*x^2-4/x急..计算题.正确的答案是:-4;[x/(x+
(x/x+2+x/2-x)*x^2-4/x 急..计算题.
(x/x+2+x/2-x)*x^2-4/x 急..计算题.
(x/x+2+x/2-x)*x^2-4/x 急..计算题.
正确的答案是:-4;
[x/(x+2)+x/(2-x)]*(x^2-4)/x
=x*[1/(x+2)-1/(x-2)]*(x^2-4)/x
=x*[(x-2)-(x+2)]/[(x+2)(x-2)]*(x^2-4)/x
=x*(-4)/(x^2-4)*(x^2-4)/x
=(-4)*x/(x^2-4)*(x^2-4)/x
=-4
正确答案是-4.
*-----------------------------------------------*| 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/x-2-x/x+2)/4x/x-2
1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做
300字读后感 2篇 俄把格式说一下吧:《xxxx》(写题目)主要内容:x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x(写那篇文章的主要内容)思考分析:x x x
X(X-4)^2
|-x+2|+|4+x|
x^4-x^2
(x^2-4)x
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
通分x+4/x*x+4x与x-5/x(x-5)-2(x-5)
(x+3x+5x...+2009x)-(2x+4x+6x+...+2010x)
分解因式:x*x*x*x+2*x*x*x-9*x*x-2x+8
x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)
x(x+2)(x-2)-4x^2+8x
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
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
x^5-x^4+x^3-x^2+x-1
x^6-x^5+x^4-x^2+x-1