数学问题求解答!急
1(X-3)(x²+9)(x+3)2(y-1)(y-2)(y-3)3(x-3)(x+1)(x²+1)4[(x²)²+(y²...
1 (X-3) (x²+9) (x+3)
2 (y-1) (y-2) (y-3)
3 (x-3)(x+1) (x²+1)
4 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
可以考虑再加悬赏的!拜托了!!!!!!!!
我认为你们都错了,如果不是我太赖,现在已经出答案了,给你们一个方法,你们帮忙算:
2(y-1) (y-2) (y-3)
=y*y+y*y+y*y-2y-3y-y-3y-y-2y+2+3+6
=3y²-12y+11 展开
2 (y-1) (y-2) (y-3)
3 (x-3)(x+1) (x²+1)
4 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
可以考虑再加悬赏的!拜托了!!!!!!!!
我认为你们都错了,如果不是我太赖,现在已经出答案了,给你们一个方法,你们帮忙算:
2(y-1) (y-2) (y-3)
=y*y+y*y+y*y-2y-3y-y-3y-y-2y+2+3+6
=3y²-12y+11 展开
8个回答
展开全部
1 (x-3) (x²+9) (x+3)
=(x-3) (x+3)(x²+9)
=(x²-9) (x²+9)
=x^4-81
2 (y-1) (y-2) (y-3)
=(y²-3y+2)(y-3)
=y³-6y²+11y-6
3 (x-3)(x+1) (x²+1)
=(x²-2x-3)(x²+1)
=x^4-x³-2x²-2x-3
4 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
=(x-y)(x+y)(x²+y²)(x^4+y^4)
=(x²-y²)(x²+y²)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8
=(x-3) (x+3)(x²+9)
=(x²-9) (x²+9)
=x^4-81
2 (y-1) (y-2) (y-3)
=(y²-3y+2)(y-3)
=y³-6y²+11y-6
3 (x-3)(x+1) (x²+1)
=(x²-2x-3)(x²+1)
=x^4-x³-2x²-2x-3
4 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
=(x-y)(x+y)(x²+y²)(x^4+y^4)
=(x²-y²)(x²+y²)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8
追问
我认为你们都错了,如果不是我太赖,现在已经出答案了,给你们一个方法,你们帮忙算:
2(y-1) (y-2) (y-3)
=y*y+y*y+y*y-2y-3y-y-3y-y-2y+2+3+6
=3y²-12y+11
追答
(y-1) (y-2) (y-3)
=y*y+y*y+y*y-2y-3y-y-3y-y-2y+2+3+6
=3y²-12y+11
这样算是错的。因为三个因式里都有y的一次方,最后的y的最高次方是3次方
三个因式相乘,不能一次就乘出来,必须两个因式相乘后,再与第三个因式相乘。
展开全部
首先先说明主机方法是错的
你可将4 带入你算得第二题 实际是不对的
解题如下
解
1 (x-3) (x²+9) (x+3)
=(x-3) (x+3)(x²+9)
=(x²-9) (x²+9)
=x^4-81
2 (y-1) (y-2) (y-3)
=(y²-3y+2)(y-3)
=y³-6y²+11y-6
3 (x-3)(x+1) (x²+1)
=(x²-2x-3)(x²+1)
=x^4-x³-2x²-2x-3
4 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
=(x-y)(x+y)(x²+y²)(x^4+y^4)
=(x²-y²)(x²+y²)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8
我已经检验过 希望能帮助到你
你可将4 带入你算得第二题 实际是不对的
解题如下
解
1 (x-3) (x²+9) (x+3)
=(x-3) (x+3)(x²+9)
=(x²-9) (x²+9)
=x^4-81
2 (y-1) (y-2) (y-3)
=(y²-3y+2)(y-3)
=y³-6y²+11y-6
3 (x-3)(x+1) (x²+1)
=(x²-2x-3)(x²+1)
=x^4-x³-2x²-2x-3
4 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
=(x-y)(x+y)(x²+y²)(x^4+y^4)
=(x²-y²)(x²+y²)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8
我已经检验过 希望能帮助到你
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
1 (x-3) (x²+9) (x+3)
=(x-3) (x+3)(x²+9)
=(x²-9) (x²+9)
=x^4-81
2 (y-1) (y-2) (y-3)
=(y²-3y+2)(y-3)
=y³-6y²+11y-6
3 (x-3)(x+1) (x²+1)
=(x²-2x-3)(x²+1)
=x^4-x³-2x²-2x-3
4 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
=(x-y)(x+y)(x²+y²)(x^4+y^4)
=(x²-y²)(x²+y²)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8
=(x-3) (x+3)(x²+9)
=(x²-9) (x²+9)
=x^4-81
2 (y-1) (y-2) (y-3)
=(y²-3y+2)(y-3)
=y³-6y²+11y-6
3 (x-3)(x+1) (x²+1)
=(x²-2x-3)(x²+1)
=x^4-x³-2x²-2x-3
4 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
=(x-y)(x+y)(x²+y²)(x^4+y^4)
=(x²-y²)(x²+y²)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8
追问
我认为你们都错了,如果不是我太赖,现在已经出答案了,给你们一个方法,你们帮忙算:
2(y-1) (y-2) (y-3)
=y*y+y*y+y*y-2y-3y-y-3y-y-2y+2+3+6
=3y²-12y+11
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
1、(X-3)(x²+9)(x+3) =(X-3)(x+3)(x²+9)=(x²-9)(x²+9)=[x^4-81]
2 、 (y-1)(y-2)(y-3) = (y²-3y+2)(y-3)= y^3-6y²+11y-6
3 、 (x-3)(x+1)(x²+1)= (x²-2x-3)(x²+1)= (x²)² - 2x^3 - 2x² -2x -3
4 、 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y) = [(x²)²+(y²)²] (x²+y²) (x²-y²)
=[(x²)²+(y²)²] [(x²)²-(y²)²] =[(x²)²+(y²)²] [(x²)²-(y²)²]
=x^8-y^8
太久没做了,不知道会不会做错呀~~只供参考吧~~
2 、 (y-1)(y-2)(y-3) = (y²-3y+2)(y-3)= y^3-6y²+11y-6
3 、 (x-3)(x+1)(x²+1)= (x²-2x-3)(x²+1)= (x²)² - 2x^3 - 2x² -2x -3
4 、 [(x²)²+(y²)²] (x²+y²) (x+y) (x-y) = [(x²)²+(y²)²] (x²+y²) (x²-y²)
=[(x²)²+(y²)²] [(x²)²-(y²)²] =[(x²)²+(y²)²] [(x²)²-(y²)²]
=x^8-y^8
太久没做了,不知道会不会做错呀~~只供参考吧~~
追问
我认为你们都错了,如果不是我太赖,现在已经出答案了,给你们一个方法,你们帮忙算:
2(y-1) (y-2) (y-3)
=y*y+y*y+y*y-2y-3y-y-3y-y-2y+2+3+6
=3y²-12y+11
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
1.解:原式=(x²-9)(x²+9)
= x四次方-81
2 .解:原式=(y-1) (y-2) (y-3)
=(y²-3y+2)(y-3)
=y³-6y²+11y-6
3 .解:原式=(x-3)(x+1) (x²+1)
=(x²-2x-3)(x²+1)
=x^4-x³-2x²-2x-3
4 .解:原式= [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
=(x-y)(x+y)(x²+y²)(x^4+y^4)
=(x²-y²)(x²+y²)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8
你自己想吧。。。我尽力了。。。打了好多字。。。
sorry!(T。T)
= x四次方-81
2 .解:原式=(y-1) (y-2) (y-3)
=(y²-3y+2)(y-3)
=y³-6y²+11y-6
3 .解:原式=(x-3)(x+1) (x²+1)
=(x²-2x-3)(x²+1)
=x^4-x³-2x²-2x-3
4 .解:原式= [(x²)²+(y²)²] (x²+y²) (x+y) (x-y)
=(x-y)(x+y)(x²+y²)(x^4+y^4)
=(x²-y²)(x²+y²)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8
你自己想吧。。。我尽力了。。。打了好多字。。。
sorry!(T。T)
追问
我认为你们都错了,如果不是我太赖,现在已经出答案了,给你们一个方法,你们帮忙算:
2(y-1) (y-2) (y-3)
=y*y+y*y+y*y-2y-3y-y-3y-y-2y+2+3+6
=3y²-12y+11
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
反问一下,你的提问是如何打出平方这个指数的?难道是先在word中打好再粘贴到提问的窗口?或者有更好的办法?
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询