write the quadratic equation that has root (-1-\sqrt(2))/(3) and (-1+\sqrt(2))/(3) coefficient with x^(2) is equal to 1 ,9, -3/5,sqrt3/5

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The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

The measure of an angle is 117°. what is the measure of a supplementary angle?