5y(9y^4+3y)

Answer 1

45y^5 + 15y^2

Answer 2

-4y^7(-3y^5+7y^7)

Answer 3

12y^12 - 28y^14

Answer 4

-6y(4y^9+10y)

Answer 5

-24y^10 - 60y^2

Answer 6

9y^5(10y^10+7y^6+3y^2)

Answer 7

90y^15 + 63y^11 + 27y^7

Answer 8

4y^5(2y^10−10y^6+2y^4)

Answer 9

8y^15 - 40y^11 + 8y^9

Answer 10

−6y^7(4y^10+?+7y^2)=−24y^17−24y^12−42y^9

find the missing value

Answer 11

The missing value is 6y^5.

Therefore, the expression becomes:
-6y^7(4y^10 + 6y^5 + 7y^2)
= -24y^17 - 24y^12 - 42y^9