Question

2s2+5s-3=0 formula De bhaskara

Answer 1

Ola!!

Resoluçao!!!

2s² + 5s - 3 = 0

a = 2, b = 5, c = - 3

∆ = b² - 4ac
∆ = 5² - 4 • 2 • ( - 3 )
∆ = 25 + 24
∆ = 49

bhaskara :

s = - b ± √∆ / 2a
s = - 5 ± √49 / 2 • 2
s = - 5 ± 7 / 4
s' = - 5 + 7 / 4 = 2/4 : 2 = 1/2
s" = - 5 - 7 / 4 = - 12/4 = - 3

S = { - 3, 1/2 }

Espero ter ajudado!!!

Answer 2

∆=b²-4ac
∆= 5² - 4 * 2* (-3)
∆= 25 + 24
∆= 49
x= -b ± √∆
/ 2a
x=-5± √49
/2 * 2
x= -5 ± 7
/ 4
X1= -5+7
/4
X1= 2
/4
X1= 1
/2
X2= -5 - 7
/4
X2= -12
/4
X2= -3
{1/2; -3}