Question

Preciso de Ajuda
Conta e Resposta...

Answer 1

5x-1=0
5x=0+1
5x=1
x=5
1
x=5

Answer 2

∆=1²-4•2•(-1)
∆=1+8=9
x=-1±√9/4
X1=2/4=1/2
X2=-4/4=-1
V={-1,1/2}