Question

Resolva as equações de 2° grau:

a)x2-2x=0
b)x-x2=0
c)1-x2=0
d)x2=0
e)x2-9=0

Answer 1

a)
0=0
b)
-x=0
c)
-x=0
d)
2x=0
e)
-7x=0