Ответ:
y = 4x² + 12x + 11
x = - b/2a = - 12/2*4 = - 1,5
y = 4*(-1,5)² + 12(-1,5) + 11 = 9 - 18 + 11 = 2
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Ответ:
y = 4x² + 12x + 11
x = - b/2a = - 12/2*4 = - 1,5
y = 4*(-1,5)² + 12(-1,5) + 11 = 9 - 18 + 11 = 2