Question

x^3 + 2x^2 - x - 2 - Factorise completely

Answer 1

$\huge{\bold☘}\mathfrak\pink{\bold{\underline{{ ℘ɧεŋσɱεŋศɭ}}}}{\bold☘}$

$\huge\tt\red{\bold{\underline{\underline{❥Question᎓}}}}$x^3 + 2x^2 - x - 2 - Factorise completely

$\huge\tt{\boxed{\overbrace{\underbrace{\blue{Answer</p><p> }}}}}$

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$⟹\bold{ {x}^{3} + 2 {x}^{2} - x - 2 = 0}$

$⟹ \bold{{x}^{2} (x + 2) - 1(x + 2) = 0}$

$⟹\bold{( {x}^{2} - 1)(x + 2) = 0}$

$⟹\bold{ {x}^{2} - {1}^{2} = (x + 1)(x - 1)}$

$\bold{(x + 1)(x - 1)(x + 2) = 0}$

$\bold{\boxed{\red{x = 1\:; - 1 \: and \: - 2}}}$

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