= - (x*2 + x*x + 7*2+7*x)
= - (2x + x² + 14 + 7x)
= -x² - 9x - 14
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= - (x*2 + x*x + 7*2+7*x)
= - (2x + x² + 14 + 7x)
= -x² - 9x - 14