Respuesta :

Answer:

y=3x^2-24x +52

group x's:

y=(3x^2-24x) +52

factor out a 3:

y=3(x^2-8x) +52

complete square:

y=3(x^2-8x+16) +52 - (3*16)

y=3(x^2-8x+16) +52 - 48

y=3(x^2-8x+16) 4

y=3(x-4)^2 +4

Step-by-step explanation: