高中毕业几十年了,看着这题就眼晕,求解,把我带回聪明的世界
Factor each. One root has been given.
15x^5+17x^4+x^3-x^2=0 ; 1/5
15x^5-22x^4+6x^2+x=0 ; -1/3
谢谢老师(们)
高中毕业几十年了,看着这题就眼晕,求解,把我带回聪明的世界
Factor each. One root has been given.
15x^5+17x^4+x^3-x^2=0 ; 1/5
15x^5-22x^4+6x^2+x=0 ; -1/3
谢谢老师(们)
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虎爸虎妈,出个面吧
-mychina-
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11/11/2016 postreply
08:19:52
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别打岔!大家正忙呢!
-AlexisMom-
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11/11/2016 postreply
08:24:19
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惭愧惭愧呀,看不懂题。
-Rockeymountain-
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11/11/2016 postreply
08:27:15
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哈哈, 第一题: 0,0, 1/5, -1, -1/3
-Doggy1-
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11/11/2016 postreply
08:25:03
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Or (5x-1) (3x+1) (x+1) x^2 = 0
-Doggy1-
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11/11/2016 postreply
08:28:41
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答案对了,但是,你是怎么做出来的,过程是个啥?
-mychina-
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11/11/2016 postreply
09:01:38
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第二题: (3x+1)(5x+1)(x-1)(x-1)x = 0
-Doggy1-
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11/11/2016 postreply
08:35:50
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先感谢一下,我再琢磨琢磨
-mychina-
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11/11/2016 postreply
08:38:27
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答案对了,但是,你是怎么做出来的,过程是个啥?
-mychina-
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11/11/2016 postreply
09:04:41
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先把22变成15+6+1,再二二分组,把(x-1) 提出来。再因式分解下去。。。
-WISEBAO-
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11/11/2016 postreply
09:21:05
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+1
-Doggy1-
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11/11/2016 postreply
15:33:04
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This is how I did the 1st one
-oops_yz-
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11/11/2016 postreply
10:31:11
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第一题:x^2(5x-1)(3x+1)(x+1)
第二题: x^2(3x+1)(x-1)(5x+1)
-四季-
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11/11/2016 postreply
12:13:47
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不好意思,二题里落了一个(x-1)
-四季-
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11/11/2016 postreply
12:16:48
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x(x-1/5)(15x^2+20x+5)=5x(x-1/5)(3x^2+4x+1)=5x(x-1/5)(3x+1)(x+1)
-四季-
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11/11/2016 postreply
12:24:02
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