Question: In order to find the axis of symmetry we took the factor 2 outside a bracket
Please fix the punctuation.
Fixed: [In order to find the axis of symmetry we took the factor 2 outside a bracket.]

Question: The fastest and easiest way to open your G64 file is to doubleclick it
Please fix the punctuation.
Fixed: [The fastest and easiest way to open your G64 file is to double-click it.]

Question: But what if it is not a habit for them
Please fix the punctuation.
Fixed: [But what if it is not a habit for them?]

Question: People who move around the house while listening to music should be deeply concerned with the sound radiation from their loudspeakers
Please fix the punctuation.
Fixed:
[People who move around the house while listening to music, should be deeply concerned with the sound radiation from their loudspeakers.]