Question

24x ao quadrado=20x-4

Answer 1

24x^2-20x+4
400-4*4*24
400-384= 16
4
x' 20+4/48= 1/2
x''20-4/48= 1/3

Answer 2

24x² = 20x - 4
24x² - 20x + 4 = 0  --->  simplifique por 4:
6x² - 5x + 1 = 0

a = 6
b = - 5
c = 1

Δ = b² - 4 ac ⇒  Δ = (-5)² - 4.6.1 ⇒  Δ = 25 - 24 ⇒  Δ = 1 


x = (-b ± √Δ)/2a ⇒  x = (-(-5) ± √1)/2.6 ⇒  x = (5 ± 1)/12

x' = (5 + 1)/12 ⇒  x' = 6/12 ⇒  x' = 1/2

x'' = (5 - 1)/12 ⇒  x'' = 4/12 ⇒  x'' = 1/3


S = {1/3 ; 1/2}