# How to get the complete square ?

Posted 3 months ago
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 Why this simple case cannot be simplified to Complete Square form
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Posted 3 months ago
 Hi Yuhai,The problem is that Subsuperscript is just notation, there is no Power in the expression. Use Power instead. eq = 1/4 Subscript[n, 1]^4 + 1/2 Subscript[n, 2]^2 Subscript[n, 1]^2 + 1/4 Subscript[n, 2]^4 Simplify@eq  $$\frac{1}{4} \left(n_1^2+n_2^2\right){}^2$$