In each of the following, decide which mathematical expression is represented by the given technology formula. (Some of them may contain redundant parentheses.)
%0
    MULTIPLECHOICE
    BUTTONS
MESSAGE
%1
    MULTIPLECHOICE
    BUTTONS
MESSAGE
%2
    MULTIPLECHOICE
    BUTTONS
MESSAGE
%3
    MULTIPLECHOICE
    BUTTONS
MESSAGE
%4
    MULTIPLECHOICE
    BUTTONS
MESSAGE
%5
    MULTIPLECHOICE
    BUTTONS
MESSAGE
%6
    MULTIPLECHOICE
    BUTTONS
MESSAGE
RANDOMIZE