1.(x^2+2x-2)(x^2+2x+4)+92.(a^2-1)^2+30(1-a^2)+2253.(x-y)^2+4(x^2-y^2)+4(x+y)^2

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1.(x^2+2x-2)(x^2+2x+4)+92.(a^2-1)^2+30(1-a^2)+2253.(x-y)^2+4(x^2-y^2)+4(x+y)^21.(x^2+2x-2)(x^2+2x+4)

1.(x^2+2x-2)(x^2+2x+4)+92.(a^2-1)^2+30(1-a^2)+2253.(x-y)^2+4(x^2-y^2)+4(x+y)^2
1.(x^2+2x-2)(x^2+2x+4)+9
2.(a^2-1)^2+30(1-a^2)+225
3.(x-y)^2+4(x^2-y^2)+4(x+y)^2

1.(x^2+2x-2)(x^2+2x+4)+92.(a^2-1)^2+30(1-a^2)+2253.(x-y)^2+4(x^2-y^2)+4(x+y)^2
1.(x^2+2x-2)(x^2+2x+4)+9
=(x^2+2x)^2+2(x^2+2x)+1
=(x^2+2x+1)^2
=(x+1)^4
2.(a^2-1)^2+30(1-a^2)+225
=(a^2-1)^2-30(a^2-1)+225
=(a^2-1-15)^2
=[(a+1)(a-1)]^2
3.(x-y)^2+4(x^2-y^2)+4(x+y)^2
=(x-y)^2+4(x-y)(x+y)+4(x+y)^2
=(x-y+2x+2y)^2
=(3x+y)^2

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 *-----------------------------------------------*| 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 || 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) 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 七年级下册政治复习提纲(山东人民出版社)第五单元是青春的脚步青春的气息别弄错了啊!格式：X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X. (x/x-2-x/x+2)/4x/x-2 分解因式----（X*X-X)(X*X-X-2)+1 |-x|+|x+2|-|2-x| x(x-2)(x-3) {x|(x+3)(x-2) -x^3+x^2-x x×x+3x-9/ x+2 f(x)=x^2+x (x |x|-2/x*x-x-12 x+2x+3x+.+100x 】x(x+1)+x^2(x-1) (x*x-3)*(x*x-3)-x*(x*x-3)-2x*x 因式分解