Question

please solve this ques ​

Answer 1

12(y² + 7y)² - 8(y² + 7y) (2y - 1) -15(2y - 1)²

=>12 + 7 - 8 × 2 -15 × 2 - 1 ×1 ( y² × y² × y² × y × y × y)

=>19 - 14 - 30 × y^9

=> - 25y^9

Answer 2

look into the pic for ans