Question

Resolva essa equacao do 2 grau x-5x+8=0

Answer 1

x-5x+8=0
a=1
b=-5
c=8
Δ= b²-4·a·c
Δ=(-5)²-4·1·8
Δ=25-32
Δ=7
x=-b⁺₋√Δ/ 2·a
x=-(-5)⁺₋√7/2·1
x=5⁺₋2,6/2
x₁=5+2,6/2=7,6/2=3,8
x₂5-2,6/2=2,4/2=1,2
S={3,8 e 1,2}
*Espero ter ajudado..^^