Question

qual e a respostar dada a funcoa f(x)=x au quadrado+6x+5;determine x1ex2

Answer 1

x²+6x+5=0,
a=1;b=6,c=5

x=-b±√∆/2a

∆=b²-4*a*c
∆=6²-4*1*5=36-20=16

x=-(6)±√16/2*1
x=-6±4/2

x1=-6+4/2=-2/2= -1

x2=-6-4/2=-10/2= -5

x²+6x+5=0
(-1)²+(6*-1)+5=0
1+(-6)+5=0
6-6=0