Question

Calcule -x²-6x+4:
E Faça o gráfico para traça-lo

Answer 1

Δ = b2 - 4.a.c 
Δ = -62 - 4 . -1 . 4 
Δ = 36 - 4. -1 . 4 
Δ = 52


x = (-b +- √Δ)/2a

x' = (--6 + √52)/2.-1   x'' = (--6 - √52)/2.-1x' = 13,21110255092798 / -2   x'' = -1,2111025509279782 / -2x' = -6,60555127546399   x'' = 0,6055512754639891