Question

determine os zeros das funções

f(x)=6 x²-12x

Answer 1

6x²-12x=0

x(6x-12) = 0


x= 0
ou
6x-12 =0
6x=12
x=12/6 =2

os zeros são 0 e 2

Answer 2

f(x)=6x^2-12x
6x^2-12x=0

▲=-12^2-4(6)(0)
▲=144

x'=(12+V144)/2(6)
x'=(12+12)/12
x'=2

x"=(12-V144)/2(6)
x"=(12-12)/12
x"=0

S={2,0}