SOLUTION: I tried to solve this problem in many ways, please help problem (2.2^2)^3 = my answer 2.2=4 (4^2)=16 16^3=4096 then (2.2^2)^3 (4.2) (8)^3 512 {{{(2.2^2

Algebra ->  Signed-numbers -> SOLUTION: I tried to solve this problem in many ways, please help problem (2.2^2)^3 = my answer 2.2=4 (4^2)=16 16^3=4096 then (2.2^2)^3 (4.2) (8)^3 512 {{{(2.2^2      Log On


   

Question 106182: I tried to solve this problem in many ways, please help
problem (2.2^2)^3 =
my answer 2.2=4
(4^2)=16
16^3=4096
then
(2.2^2)^3
(4.2)
(8)^3
512

%282.2%5E2%29%5E3
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
I'm not sure I understand your first step where you say "2.2 = 4" and I think that is where you got off track.
%282.2%5E2%29%5E3 is the original problem.

The first step is to square 2.2:
2.2%5E2=2.2%2A2.2=4.84

The second step is to cube this result:

4.84%5E3=4.84%2A4.84%2A4.84=113.3799

You should round your answer to one decimal place, i.e. 113.4, because the most accuracy you had at the start, the number 2.2, was a single decimal place. If the problem had been stated thus:

%282.2000%5E2%29%5E3, THEN it would be proper to carry your result to four places.