Question

2+9x+8=0 delta e Baskhara

Answer 1

x² + 9x + 8 = 0


delta = b² - 4.a.c


a = 1
b = 9
c = 8


delta = 9² - 4.1.8
delta = 81 - 32
delta = 49

x = -b ± √delta/2.a


x = -9 ± √49/2.1

x = -9 ± 7/2

x = -9 - 7/2 = -16/2 = -8

x = -9 + 7/2 = -2/2 = -1


S={ -8, -1 }





☆Espero ter ajudado!