Ответ:
(х + 2)².
Объяснение:
x² +4x +4 = 1•(х + 2)(x + 2) = (х + 2)².
а = 1, b = 4, c = 4
D = b² - 4ac = 4² - 4•1•4 = 0,
x1 = (-b+√D)/(2a) = -4/2 = - 2
x2 = (-b-√D)/(2a) = - 4/2 = - 2
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Ответ:
(х + 2)².
Объяснение:
x² +4x +4 = 1•(х + 2)(x + 2) = (х + 2)².
а = 1, b = 4, c = 4
D = b² - 4ac = 4² - 4•1•4 = 0,
x1 = (-b+√D)/(2a) = -4/2 = - 2
x2 = (-b-√D)/(2a) = - 4/2 = - 2