Question

função do 2 grau y=-2x²+12x

Answer 1

y=-2x²+12x
-2x²+12x = 0 ÷(2)
-x²+ 6x = 0
x.(-x + 6) = 0

x' = 0
x'' = 6

att

Answer 2

Y=-2x²+12x
Y=x(-2x+12)

x=0| -2x+12=0
      | -2x=-12 .(-1)
      |  2x=12
      |   x=6
S={0;6}