Question

Equação do 2º: 2x²-18=0 usando a formula de Bhaskara

Answer 1

x= (-b+/-√b²-4ac)/2a
x= (-0+/-√0²-4.2.(-18))/2.2
x= +/-√144/4
x=+/-12/4
x=+3
x=-3

Answer 2

2x²-18=0
2x²=18
x²=18÷2
x²=9
x=±√9
x=±3