Question

(3v^4 - 2) - (7v^4 + 6)

Answer 1

So firstly, you want to foil - (7v^4 + 6) [Think of the minus sign as -1]:
`3v^4 - 2 - 7v^4 - 6`

Next, combine like terms and your answer will be:
`-4v^4-8`