Solving x's & 2's: Foiling or Multiplying?

[carlosgrahm]

Do you foil or do you multiply x's togeather and 2's togeather

 

[symbolipoint]

Carlosgrahm asks:

(xsinx)^2

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Do you foil or do you multiply x's togeather and 2's togeather

(xsinx)^2 = (xsin(x))$$^{2}$$ = x$$^{2}$$sin$$^{2}$$(x)

 

[jgens]

Just to elaborate on symbolipoint's post: generally, (ab)^n = (a^n)(b^n) for integer n and a,b != 0.