化简(x的平方减一除以x的平方减x加一 + 一减x除以x加一)÷(x除以x减一) 原题无法呈现,自己写在纸上吧
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解决时间 2021-11-17 20:07
- 提问者网友:人生佛魔见
- 2021-11-16 23:49
化简(x的平方减一除以x的平方减x加一 + 一减x除以x加一)÷(x除以x减一) 原题无法呈现,自己写在纸上吧
最佳答案
- 五星知识达人网友:平生事
- 2021-11-17 01:19
郭敦顒回答:
原题:[ (x²-1)/( x²-x+1) +(1-x)/(x+1)] /[ x/(x-1)]
=[ (x²-1)/( x²-x+1) +(1-x)/(x+1)] • [ (x-1) / x]
=(x-1) (x²-1)/ x ( x²-x+1) +(1-x) ²/x (x+1)
=(x-1) ²(x+1)/ x ( x²-x+1)+ (x-1) ²/x (x+1)
=[(x-1) ²/x] •[(x+1)/ ( x²-x+1)+1/(x+1)]
(也并不太简,这题也就是如此)追问应该还没化简完吧追答郭敦顒继续回答:
原题:[ (x²-1)/( x²-x+1) +(1-x)/(x+1)] /[ x/(x-1)]
=[ (x²-1)/( x²-x+1) +(1-x)/(x+1)] • [ (x-1) / x]
=(x-1) (x²-1)/ x ( x²-x+1) +(1-x) ²/x (x+1)
=(x-1) ²(x+1)/ x ( x²-x+1)+ (x-1) ²/x (x+1)
=[(x-1) ²/x] •[(x+1)/ ( x²-x+1)+1/(x+1)]
=[(x-1) ²/x] •[(x+1) ²+ ( x²-x+1)]/ [( x²-x+1)(x+1)]
=[(x-1) ²/x] •x/ [( x²-x+1)(x+1)]
= ( x-1) ²/ [( x²-x+1)(x+1)]。
原题:[ (x²-1)/( x²-x+1) +(1-x)/(x+1)] /[ x/(x-1)]
=[ (x²-1)/( x²-x+1) +(1-x)/(x+1)] • [ (x-1) / x]
=(x-1) (x²-1)/ x ( x²-x+1) +(1-x) ²/x (x+1)
=(x-1) ²(x+1)/ x ( x²-x+1)+ (x-1) ²/x (x+1)
=[(x-1) ²/x] •[(x+1)/ ( x²-x+1)+1/(x+1)]
(也并不太简,这题也就是如此)追问应该还没化简完吧追答郭敦顒继续回答:
原题:[ (x²-1)/( x²-x+1) +(1-x)/(x+1)] /[ x/(x-1)]
=[ (x²-1)/( x²-x+1) +(1-x)/(x+1)] • [ (x-1) / x]
=(x-1) (x²-1)/ x ( x²-x+1) +(1-x) ²/x (x+1)
=(x-1) ²(x+1)/ x ( x²-x+1)+ (x-1) ²/x (x+1)
=[(x-1) ²/x] •[(x+1)/ ( x²-x+1)+1/(x+1)]
=[(x-1) ²/x] •[(x+1) ²+ ( x²-x+1)]/ [( x²-x+1)(x+1)]
=[(x-1) ²/x] •x/ [( x²-x+1)(x+1)]
= ( x-1) ²/ [( x²-x+1)(x+1)]。
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