Question 1

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Agrupa, per grau decreixent,  els monomis següents:

begin mathsize 12px style bold left parenthesis begin bold style negative 9 times x cubed end style bold right parenthesis bold space bold plus bold space bold left parenthesis begin bold style negative 8 times x to the power of 7 end style bold right parenthesis bold space bold plus bold space bold left parenthesis begin bold style 8 times x cubed end style bold right parenthesis bold space bold plus bold space bold left parenthesis begin bold style 9 times x to the power of 7 end style bold right parenthesis bold space bold plus bold space bold left parenthesis begin bold style negative 7 times x to the power of 10 end style bold right parenthesis end style

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