Question

factorise x cube minus 23 x square + 142 X - 120​

Answer 1

Answer:

(x-1) (x-22)

Step-by-step explanation:

x^3-23x^2+142x-120

take x common

x^2-23x+142-120=0

x^2-23x+22=0

x^2-22x-x+22=0

x(x-22)-1(x-22)=0

(x-1) (x-22)

Answer 2

Answer:

x

3

−23x

2

+142x−120

=x

3

−x

2

−22x

2

+22x+120x−120

=x

2

(x−1)−22x(x−1)+120(x−1)

=(x−1)(x

2

−22x+120)

=(x−1)[x

2

−10x−12x+120]

=(x−1)[x(x−10)−12(x−10)]

=(x−1)(x−10)(x−12)

Step-by-step explanation:

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