Question

observe o conjunto A={-3,-2-1,0,1,2,3}DENTRE ESSES VALORES QUAIS SAO AS RAIZES DA FUNCAO F(X)=X=5X=6

Answer 1

f ( x ) x² + 5x + 6

a = 1

b = 5

c = 6

Δ = b² - 4ac

Δ = 5² - 4 . 1 . 6

Δ = 25 - 24

Δ = 1

$x = \frac{- b± \sqrt{Δ} }{2a}$

$x = \frac{ - 5± \sqrt{1} }{2.1}$

$x = \frac{ - 5±1}{2}$

${x}^{l} = \frac{ - 5 + 1}{ 2}$

${x}^{l} = \frac{ - 4}{2}$

${x}^{l} = - 2$

${x}^{ll} = \frac{ - 5 - 1}{2}$

${x}^{ll} = \frac{ - 6}{2}$

${x}^{ll} = - 3$

As raizes da função são { - 3 ; - 2 }

Espero ter ajudado .