Question

f(x) = x² + 4x + 4 ajudem aiii

Answer 1

y = f(x) = 0 Logo temos

f(x) = x² + 4x + 4
0 = x² + 4x + 4
x² + 4x + 4 = 0


∆ = b² - 4ac
∆ = 4² - 4.1.4
∆ = 16 - 16
∆ = 0


x = -b±√∆/2a


x¹ = -4 + 0/2
x¹ = -4/2
x¹ = -2


x² = -4/2
x² = -2

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