Question

me ajudem pfffff. y²-8y=0

Answer 1

y²-8y=0
y(y - 8) = 0
y = 0 

ou:

y -  8 = 0
y = 8 

S= {0,8}

Answer 2

y^2-8y=0
y(y-8)=0
y=0
y-8=0
y=0+8
y=8
y^2-8y=0
delta=b^2-4ac
delta=(-8)^2-4.1.0
delta=64-0
delta=64
y=-b-/+ raiz de delta/2a
y=-(-8)-8/2.1
y=8-8/2
y=0/2
y=0
y=-(-8)+8/2.1
y=8+8/2
y=16/2
y=8