Question

determine os zeros da funçao y=x²+2x

Answer 1

x²+2x=p
x(x+2)=p
x=0
ou
x+2=0
x=-2
as raízes são 0 e -2

Answer 2

y=x²+2x
0=x²+2x
x²+2x=0
x(x+2)=0
x=0
(x+2)=0
x+2=0
x=-2
 
S={-2,0}