1) - q + q² - 7 = q² - q - 7 = (q - 0,5)² - 7,25
3) x² - 5x = (x - 2,5)² - 6,25
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1) - q + q² - 7 = q² - q - 7 = (q - 0,5)² - 7,25
3) x² - 5x = (x - 2,5)² - 6,25