Question

x2-3×-4=0 equacao do segundo grau

Answer 1

3 X² - 3 X - 4 = 0
Δ = b² - 4.a.c
Δ = (-3)² - 4.a.c
Δ = 9 - 4 .3.-4
Δ = 9  + 48
Δ = 57 ⇒√ 57
x = - b +  ou - √57/2.3
x = - (-3) + √57/6 ⇒3 + √57/ 6 = 1 + √57 / 3
x ´´ = 3 - √57 / 6 ⇒1 - √57 / 3
S = {1 - √ 57 /3 ; 1 + √57/3}