Question

а^7 - а^5 - 2а^2 + 2 ПОМОГИТЕ!!!!!!!

Answer 1

$a {}^{7} - a {}^{5} -2 a {}^{2} + 2$
$a {}^{5} \times (a {}^{2} - 1) - 2(a {}^{2} - 1) \\ (a {}^{2} - 1) \times (a {}^{5} - 2) \\ (a - 1) \times (a + 1) \times (a {}^{5} - 2)$