How to remove parentheses from algebraic expression?

Asked Mar 29 '16 at 19:58

Active Mar 29 '16 at 20:12

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Suppose I have an expression like $x+x+y(x+y(x+y))$. I used Simplify command and get $y^3+x(2+y+y^2)$. How to remove parentheses to get every summand explicitly? $$y^3+2x+xy+xy^2$$

edited Mar 29 '16 at 20:12

asked Mar 29 '16 at 19:58

Glinka

5

use Expand instead – garej Mar 29 '16 at 20:07
@garej, thanks, it worked! Is there a way to count the number of summands? – Glinka Mar 29 '16 at 20:10
of course, i.e. 101119 – garej Mar 29 '16 at 20:15
@garej, what @ means? You deleted that comment? The cntSummands worked, thanks – Glinka Mar 29 '16 at 20:27
http://mathematica.stackexchange.com/questions/18393/what-are-the-most-common-pitfalls-awaiting-new-users/25616#25616 – Szabolcs Mar 29 '16 at 20:31
@Glinka, @ means very basic thing in MMA. You may use key F1 with term in question to get reference. – garej Mar 29 '16 at 20:31
You could use Length[Apply[List, Expand[x + x + y (x + y (x + y))]]]. Thiw works because after expansion of a polynomial, Plus is the head and the terms are the next level leaves. Apply makes this a list of terms. – JJM Mar 29 '16 at 20:37

How to remove parentheses from algebraic expression?

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