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Do the work inside the parenthesis first.
you distribute the negative to the inside of the parenthesis
Open parenthesis are used at the beginning of a quote. Close parenthesis are used at the end of a quote after the punctuation.
(3x3+1)2+1=7x2+1=15 and that is how you use parenthesis but, always do parenthesis before you do anything else......^_^
(x2y2)3 + (x3y3)2 = 2x6y6.