Question

y=4x^2--18x+3 resolver funcion cuadrática

Answer 1

Parábola
y=4x²-18x+3
4x²-18x+3=0
a=4, b= -18, c= 3
Fórmula general [-b = ± √(b²-4ac)] /2a 
[18 = ± √(-18²-4*4*3)]/2*4
[18 = ± √(324-48)]/8
[18 = ± √276] / 8

x1 = [18 + √276] / 8
x1 =0.173
x2 = [18 - √276] / 8
x2 = 4.32

Dominio ={todos los llR}
Rango {y ≥ -69/4}

Saludos....