Question

5x² + 3x - 2 = 0 calcular o discriminante

Answer 1

a = 5 b = 3 c = -2
Δ = $3^{2} - 4 * 5 *-2 = 9 - (-40) = 9 + 40 = 49$

Answer 2

5x² + 3x - 2 = 0
Δ = 3² - 4.5.(-2)
Δ = 9 + 40
Δ = 49

x = -3 +- √49 / 2.5
x = -3 +- 7 / 10

x1 = -3 + 7 / 10
x1 = 4 / 10
x1 = 0,4

x2 = -3 -3 / 10
x2 = -6 / 10
x2 = -0,6