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Anyutta99
@Anyutta99
March 2022
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Выделите квадрат двучлена из неполного квадратного трехчлена:
а) х^2 +4х
б)х^2 -6х
в) х^2 +7х
г)х^2 -х
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Верона9996
А) х² + 4х = х² + 4х + 4 - 4 = (х + 2)² - 4;
б) х² - 6х = х² - 6х + 9 - 9 = (х - 3)² - 9;
в) х² + 7х = х² + 7х + 12,25 - 12,25 = (х + 3,5)² - 12,25;
г) х² - х = х² - х + 1/4 - 1/4 = (х - 1/2)² - 1/4.
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Answers & Comments
б) х² - 6х = х² - 6х + 9 - 9 = (х - 3)² - 9;
в) х² + 7х = х² + 7х + 12,25 - 12,25 = (х + 3,5)² - 12,25;
г) х² - х = х² - х + 1/4 - 1/4 = (х - 1/2)² - 1/4.