resposta de x (x-5)= -6
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x(x-5)=-6
x²-5x=-6
x²-5x+6=0
a=1 b=-5 c=6
Δ=b²-4.a.c
Δ=-5²-4.1.6
Δ=25-24
Δ=1
x'=-b+√Δ/2.a
x'=-(-5)+√1/2.1
x'=+5+1/2
x'=6/2
x'=3
x''=-b-√Δ/2.a
x''=-(-5)-√1/2.1
x''=+5-1/2
x''=4/2
x''=2
x²-5x=-6
x²-5x+6=0
a=1 b=-5 c=6
Δ=b²-4.a.c
Δ=-5²-4.1.6
Δ=25-24
Δ=1
x'=-b+√Δ/2.a
x'=-(-5)+√1/2.1
x'=+5+1/2
x'=6/2
x'=3
x''=-b-√Δ/2.a
x''=-(-5)-√1/2.1
x''=+5-1/2
x''=4/2
x''=2
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