Question

Factorise 1) x³– 2x²–x + 2 This question is from class 9th textbook of maths .exercise 2.4 question no. 5

Answer 1

Step-by-step explanation:

Factorise x³-2x²-x+2→

x³-2x²-x+2

=> x²(x-2)-1(x-2)

=> (x²-1)(x-2)

(1 can be Expressed as 1²)

=> (x²-1²)(x-2)

(a²-b² = (a+b)(a-b))

=> (x+1)(x-1)(x-2)

The factors of x³-2x²-x+2 are→

(x+1)(x-1)(x-2)

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Hope you understand :)-