计算:x²-(y-z)²分之x²-y²除以(x-y)²-z²分之x²+2xy+y²乘以x ²-xy分之x²+xy-xz
这是完整的题目
请你们快点把答案发给我,要有计算过程
拜托了~~~~
还有这题:化简:2a+6分之a²+5a+6乘以a²-4分之a²+2a-8
计算:x²-(y-z)²分之x²-y²除以(x-y)²-z²分之x²+2xy+y²乘以x
答案:3 悬赏:50 手机版
解决时间 2021-03-11 10:53
- 提问者网友:回忆在搜索
- 2021-03-10 16:43
最佳答案
- 五星知识达人网友:平生事
- 2021-03-10 17:48
(x²-y²)/〔x²-(y-z)²〕÷(x²+2xy+y²)/〔(x-y)²-z²〕×(x²+xy-xz)/(x ²-xy)
=【(x+y)(x-y)/〔x+(y-z)〕〔x-(y-z)〕】÷【(x+y)²/〔(x-y)+z〕〔(x-y)-z〕〕×【x(x+y-z)/x(x -y)】
=〔(x+y)(x-y)/(x+y-z)(x-y+z)〕×〔(x-y+z)(x-y-z)/(x+y)²〕×〔(x+y-z)/(x -y)〕
=(x-y-z)/(x+y)
(a²+5a+6)/(2a+6)×(a²+2a-8)/(a²-4)
=(a+2)(a+3)/2(a+3)×(a-2)(a+4)/(a+2)(a-2)
=(a+2)/2×(a+4)/(a+2)
=(a+4)/2
=【(x+y)(x-y)/〔x+(y-z)〕〔x-(y-z)〕】÷【(x+y)²/〔(x-y)+z〕〔(x-y)-z〕〕×【x(x+y-z)/x(x -y)】
=〔(x+y)(x-y)/(x+y-z)(x-y+z)〕×〔(x-y+z)(x-y-z)/(x+y)²〕×〔(x+y-z)/(x -y)〕
=(x-y-z)/(x+y)
(a²+5a+6)/(2a+6)×(a²+2a-8)/(a²-4)
=(a+2)(a+3)/2(a+3)×(a-2)(a+4)/(a+2)(a-2)
=(a+2)/2×(a+4)/(a+2)
=(a+4)/2
全部回答
- 1楼网友:十鸦
- 2021-03-10 20:08
提醒你分解因式 然后化简 我闲麻烦做了一半不想做了……
- 2楼网友:孤独入客枕
- 2021-03-10 18:36
X^2-Y^2 (X-Y)^2-Z^2 X^2+XY-XZ
—————— * ———————— * ————————
X^2-(Y-Z)^2 X^2+2XY+Y^2 X^2-XY
(X+Y)(X-Y) (X-Y+Z)(X-Y-Z) X(X+Y-Z)
= ———————— * —————————— * ————————
(X-Y+Z)(X+Y-Z) (X+Y)^2 X(X-Y)
(X-Y-Z)
= ————————-
(X+Y)
a^2+5a+6 a^2+2a-8
—————————— * ——————————
2a+6 a^2-4
(a+2)(a+3) (a-2)(a+4) (a+4)
= ———————————— * ———————————— = ————————
2(a+3) (a+2)(a-2) 2
我要举报
如以上回答内容为低俗、色情、不良、暴力、侵权、涉及违法等信息,可以点下面链接进行举报!
点此我要举报以上问答信息
大家都在看
推荐资讯