tolong faktorkanlah bilangan al jabar berikut

Factorize.

Number 1
2a² + 9a + 7
= (2a² + 2a) + (7a + 7)
= 2a(a + 1) + 7(a + 1)
= (2a + 7)(a + 1)

Number 6.
2k² - 11k + 9
= (2k² - 2k) + (-9k + 9)
= 2k(k - 1) - 9(k - 1)
= (2k - 9)(k - 1)