Question

sedo x=-b+Vb2-4ac,calcule o valor de xpara a=1,b=5 e c=6

Answer 1

a = 1, b = 5, c = 6

x = (- b ± √(b² - 4 . a . c))/(2 . a)
x = (- 5 ± √(5² - 4 . 1 . 6))/(2 . 1)
x = (- 5 ± √(25 - 24))/2
x = (- 5 ± √1)/2
x = (- 5 ± 1)/2

x' = (- 5 + 1)/2
x' = - 4/2
x' = - 2

x'' = (- 5 - 1)/2
x'' = - 6/2
x'' = - 3

S = {- 3, - 2}