Question

Hello:) I need help with 6(b) thank youu in advanced !

( The question is in the pic below )

Answer 1

(2y − 7) (4y − 3)

Explanation:

From 5(a):

2x² − 5x − 12 = (x − 4) (2x + 3)

Therefore, replacing x with 2y − 3:

2 (2y − 3)² − 5 (2y − 3) − 12

= ((2y − 3) − 4) (2 (2y − 3) + 3)

= (2y − 7) (4y − 6 + 3)

= (2y − 7) (4y − 3)