Question

resolva a equaçao de 2° grau em R 2x²+3x+1=0

Answer 1

2 x² + 3 x + 1 = 0
Δ = b² - 4.a.c
Δ = 3² - 4 . 2 . 1
Δ = 9 - 8
Δ = 1 ⇒ √1 = 1
x = - b + ou - 1/2.2
x´= -3 + 1 / 4
x´= -2 / 4  ⇒ -1/2
x´´ = -3 - 1 / 4
x´´ = -4/4 ⇒ - 1
S = {-1 ; -1/2 }