Question

qual er o valor do delta x.{x+2}=3

Answer 1

o valor de delta igual a 16

Answer 2

x.(x+2)=3
x²+2x=3
x²+2x-3=0
∆=b²-4ac
∆=2²-4.1.(-3)
∆=4+12
∆=16
x=-b±√∆/2a
x=-2-4/2.1
x=-6/2
x=-3
x=-2+4/2.1
x=2/2
x=1
S={(-3, 1)}