(x^2-2x)^2-6(x^2-20+9)
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(x^2-2x)^2-6(x^2-20+9)(x^2-2x)^2-6(x^2-20+9)(x^2-2x)^2-6(x^2-20+9)(x^2-2x)^2-6(x^2-20+9)=x^4-4x^3+4x
(x^2-2x)^2-6(x^2-20+9)
(x^2-2x)^2-6(x^2-20+9)
(x^2-2x)^2-6(x^2-20+9)
(x^2-2x)^2-6(x^2-20+9)
=x^4-4x^3+4x^2-6x^2+120x-54
=x^4-4x^3-2x^2+120-54
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
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x(x*x-6x-9)-x(x*x-8x-15)+2x(3-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
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-x^2/6
x-x^2/6
约分:1、x*x-9/6-2x 2、x*x-1/x-x*x
x(x+2)(x+6)+20x+6=0
因式分解(x+1)(x-2)(x-3)(x-6)+20
(2-x)(6-x)(12-x)(20-x)=
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
(x+3x+5x...+2009x)-(2x+4x+6x+...+2010x)
因式分解:(x+1)(x+2)(2x+3)(x+6)-20x^4
麻烦解4道分式方程(20分)(x/2x-5)+(5/5-2x)=1(x+1/x*x-2x)-(1/x)=3/x-2(1-x/5-x)-(5-x/1-x)=8/x*x-6x+5(x+1/x-1)-(4/x*x-1)=1去掉括号,不管前面正负,都不变号~
x/x-3-5x/x^2-x-6计算
x^6-x^5+x^4-x^2+x-1