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Factorize:x^(3)-13x-12...

Factorize:`x^(3)-13x-12`

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`x^(3)13x-12 :'x=-1"satisfies given expression"`
`rArr x+1" is a factor"`

`:. X^(3)-13x-12=(x+1)(x^(2)-x-12)`
`=(x-1)(x-4)(x+3)`
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