Question

equacao do 2 grau x elevado a 2 -5x+6=0

Answer 1

x²-5x+6=0

Δ=(-5)²-4.1.6
Δ=25-24
Δ=1

x'= -(-5)+1 /2
x'= 5+1 /2
x'= 6 /2
x'=3

x"= -(-5)-1 /2
x"= 5-1 /2
x"= 4/2
x"= 2

S={3,2}

Answer 2

x'= 3
×"=2

conta na foto.