Question

Materia do 8 ano matematica

Answer 1

a = 1 b = -4 c = 3

$x_{v} = \frac{-b}{2a}$

$\frac{-(-4)}{2(1)}$

$\frac{4}{2}$

$x_{v} =2$

Δ = $b^2-4ac$

$(-4)^2-4(1)(3) 16-12 4$

$y_{v} = \frac{-4}{4(1)}$

$y_{v} = \frac{-4}{4} -1$

$S= (2,-1) letra b$