Question

Resolva as equaçoes a) x+5+4/x=0

Answer 1

x+5+4/x=0
x+4/x=-5
(x²+4)/x=-5
x²+4=-5x
x²+5x+4=0

delta= 5²-4*1*4
delta=25-16
delta=9

x'=(-4+raiz(9))/2*1
x'=(-4+3)/2=-1/2

x"=(-4-raiz(9))/2*1
x"=(-4-3)/2 = -7/2

As raízes dessa equação são -1/2 e -7/2