Question

$x^{3} - 2x ^{2} - x + 2 \: factorize$
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Answer 1

Answer :-

→ x³ - 2x² - x + 2

→ x² ( x - 2 ) - 1 ( x - 2 )

→ ( x - 2 ) ( x² - 1 )

→ ( x - 2 ) ( x² - 1² )

Apply identity a² - b² = (a + b) (a - b)

→ ( x - 2 ) ( x + 1 ) ( x - 1 )