Question

Factorise : x³-23x²+142x-120

Answer 1

Hey buddy

Here is ur answer

Let x=-1

${ - 1}^{3} - 23( { - 1}^{2} ) + 142( - 1) - 120 \\ = 0$

Hence one of the zero is -1

other two zeroes are 21 and 22

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Answer 2

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