Question

raízes da função f(x)=x²-2x+6.

Answer 1

f(x) = x²-2x+6

a = 1 b = -2 c = 6

Δ = b² - 4.a.c

Δ = (-2)² - 4.1.6

Δ = 4 - 24

Δ = 20

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x = -b² +- √20/2.a

x = -(-2)² +- 4/2

x = 4 + 4/2

x = 8/2

x = 4

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x = 4 - 4/2

x = 0/2

x = 0