Solve: $a^{3} + 2 a^{2} - a - 2$

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Solution

$a^{3} + {2 a}^{2} - a - 2 a^{2} (a + 2) - (a + 2) (a^{2} - 1) (a + 2) (a - 1) (a + 1) (a + 2) a = \pm 1, - 2$

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Similar questions

a^{3} + 2 a^{2} - a - 2

(a^{3} - 2 a^{2} + 4 a - 5) - (- a^{3} - 8 a + 2 a^{2} + 5)

By inspection, a³ - 2a² + a - 2 gives

P

a^{3} - 2 a^{2} + p a + 4 = - 5

a = - 2

\frac{a^{2} - 16}{a^{3} - 8} \times \frac{2 a^{2} - 3 a - 2}{2 a^{2} + 9 a + 4} \div \frac{3 a^{2} - 11 a - 4}{a^{2} + 2 a + 4}

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