Question

how to factorise x cube minus 3 X + 2​

Answer 1

Answer:

Step-by-step explanation:

$x^3-3x+2\\\\=x^3+x^2-2x-x^2-x+2\\\\= x(x^2+x-2)-(x^2+x-2)\\\\=(x-1)(x^2+x-2)\\\\=(x-1)(x^2+2x-x-2)\\\\=(x-1)(x(x+2)-(x+2))\\\\=(x-1)(x-1)(x+2)$

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