Whoa, this is killing me, I don't understand this math, please help me?

Question

#1. Add

(4v^4 - 4v^3 + 3v^2 + 12v - 6) + (v^5 + 12v^3 + 5v^2 - 3v + 3) + (-7v^4 + v^2 -6v -7)


#2. Multiply

(-3m)^2 * (2m^4)^3

#3. Solve

b^2 + 3b - 54 = 0

Answer 1

1) Line up the corresponding v's . This gives:
v^5- 3v^4 +8v^3 +9v^2 +3v -10

2) (9m^2)(8m^12) = 72 m^14
I simplified the originals

3)(b-6 )(b+9 ) (too easy)

Answer 2

#1
4v^4-4v^3+3v^2+12V-6+v^5+12V^3+5V^2-3V+3-7V^4+V^2 - 6V-7
Add like terms - that is 4V^4 is NOT a like term to 4V^3 and so on...
v^5 - 3V^4 + 8V^3 + 9V^2 + 3V - 10

#2
(-3m)^2 * (2m^4)^3
9m^2 * 8m^12
72m^14

#3
b^2 + 3b - 54 =0 (Factorise)
(b + 9)(b - 6) = 0
b + 9 0 => b = -9
&/or
b - 6 = 0 => b = 6
So the two solutions are b = -9 and b = 6!!!!

Answer 3

1) Combine the like terms: v^5 - 3v^4 + 8v^3 + 9v^2 + 3v - 10
It looks harder than it is

2) Reduces to 9(m^2) * 8(m^12)
End with 72 m^14

3) Factor: (b+9)(b-6) = 0
b = -9 b = 6