Question

Determine as raízes reais de: 2x² − 5x − 3 = 0​

Answer 1

Resposta:

Δ=  b² - 4ac

Δ= (5)² - 4.2. (-3)

Δ= 25 + 24

Δ= 49

x'= - 5 + 7 / 2.2

x'= - 5 + 7/ 4

x'= 2/4

x'= 1/2

x''= -5 -7/4

x''= -12/4

x''= - 3