SOLUTION: (2a-b)^3 if a=3, and b=-2 ive worked on it, and i think i got it? but i could have done it wrong too.. i got (2(3)-(-2))^3 (6-2)^3 (4)^3 64. right?

Algebra ->  Exponents -> SOLUTION: (2a-b)^3 if a=3, and b=-2 ive worked on it, and i think i got it? but i could have done it wrong too.. i got (2(3)-(-2))^3 (6-2)^3 (4)^3 64. right?      Log On


   

Question 373258: (2a-b)^3
if a=3, and b=-2
ive worked on it, and i think i got it? but i could have done it wrong too..
i got
(2(3)-(-2))^3
(6-2)^3
(4)^3
64.
right?
Found 2 solutions by Fombitz, rfer:
Answer by Fombitz(32388) About Me  (Show Source):
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
Ok
a minus times a minus is a plus
look at it like this (2*3)-1*-2
so we get
(6+2)^3
8^3=512