Question

Dada a função Y= x²- 6x + 8
Calcule:

Answer 1

Resposta:

a)∆=(-6)²-4.1.8

∆=36-32

∆=4

b)X=6±√4/2.1 => X=6±2/2

x'=6+2/2 => x'=8/2 => x'=4

x"=6-2/2 => x"=4/2 => x"=2

c)XV=6/2.1

XV=3

YV=-4/4.1

YV=-1

Espero ter ajudo, bons estudos