Question

Factorise ➡️

(a² - 2a)² - 23(a² - 2a) + 120

____✔

Answer 1

✨ɦεყα ∂εαɾ✨

Refer the attachment for the solution.. ^-^

Answer 2

$\huge\bold{【HELLO】}$

P(a) = (a² - 2 a)² - 23 (a² - 2 a) + 120

= x² - 23 x + 120

x = a² - 2 a

→120 = 15 * 8

→15 + 8 = 23

then x² - 15 x - 8 x + 120

(x - 15) x - 8 (x - 15)

(x - 15) ( x - 8)

so P(a) = ( a² - 2a -15) (a² - 2a - 8)

= (a - 5) (a + 3) (a - 4) (a + 2)

by factorizing the two factors.