Question

Determine as raízes da equação 2x²+3x-2=0.

Answer 1

2x²+3x-2=0

a = 2 b = 3 c = -2

∆ = 3² - 4.2.(-2)

∆ = 9 + 16

∆ = 25

x = -3 ± √25/2.2

x = -3 ± 5/4

x¹ = -3+5/4 = 2/4 (÷2) = 1/2

x² = -3-5/4 = -8/4 = -2

(S = 1/2, -2)