SOLUTION: i dun get how u take the numbers out of the parentheses! such as: (2a+b)2 (squared) =...what

Algebra ->  Expressions -> SOLUTION: i dun get how u take the numbers out of the parentheses! such as: (2a+b)2 (squared) =...what       Log On


   

Question 23650: i dun get how u take the numbers out of the parentheses!
such as:
(2a+b)2 (squared) =...what
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
%282a%2Bb%29%5E2 really means %282a%2Bb%29%2A%282a%2Bb%29+, which is what most people now call a F OI L problem. Have you had those? If not, see Chapter 2 of my Basic Algebra: One Step at a Time on my website.

Anyway:
%282a%2Bb%29%2A%282a%2Bb%29+,
4a%5E2+%2B+2ab%2B2ab%2B+b%5E2
4a%5E2+%2B+4ab+%2B+b%5E2+

R^2 at SCC