Question

resolvaaaaa urgente ​

Answer 1

Resposta:

a) x² -4=0

x²=4

x=+- 2X

x= -2

x= 2

d)2x²-4x=0

2x*(x-2)=0

x*(x-2)=0

x=0

x-2=0

x¹=0

x²= 2

o resto nos comentarios!!!