Question

please answer these Questions. don't spam please .spam answers will be reported .please answer correctly it's urgent​

Answer 1

Answer:

22)

$2 {y}^{3} + {y}^{2} - 2y - 1 \\ {y}^{2} (2y + 1) - 1(2y + 1) \\ (2y + 1)( {y}^{2} - 1)$

this is your answer 21 I don't know

Answer 2

y²(2y+1) -1(2y+1)

now make pair of

(y²-1) (2y+1)

hope it will helpful.

thanks