Question

resposta de x (x-5)= -6

Answer 1

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