Question

add: (-4 + n - 2n2) + 2 - 5n - 6n2

Answer 1

((((−4+n)−2n(2))+2)−5n)−6n(2)
=(−4)+n+(−4n)+2+(−5n)+(−12n)
=(−20n)+(−2)
=−20n−2

Answer 2

when adding variables like this, treat them like normal numbers but just deal with the coefficient differently.