Question

f(x) -x^2+5x resolver os zeros da raízes

Answer 1

f(x) =-x^2+5x

x.(-x+5)=0

x=0

-x+5=0

-x=-5

x=-5/-1

x=5

s={0,5}

usando a formula de bascara

f(x)=-x^2+5x

∆=√b^2-4.a.c

∆=√(5)^2-4.1.0

∆=√25-4.0

∆=√25-0

∆=√25

∆=√5

x1=-b+√∆/2a

x1=-5+5/2

x1=0/2

x1=0

x2=-b-√∆/2a

x2=-5-5/-2

x2=-10/-2

x2=5

s={0,5}

espero ter ajudado!

boa tarde!