First remove the parenthes as there is a negtive outside the second parentheses the signs of the terms inside change.
= 2n^4 - 8 - 3n - 4n^2 - 7n - 4
Now simplify like terms
= 2n^4 - 4n^2 - 10n - 12
= 2(n^4 - 2n^2 - 5n - 6)
Please check this out I think it’s correct !!!
1
because 5 plus 4 = 9
and you cant have 9/9
9/9=1
It's become a lot faster and easier to collect research.