Question

ENCONTRE A RAIZ DA SEGUINTE EQUACAO
-X²+10X-25=0

Answer 1

-x²+10x-25=0
∆=b²-4ac
∆=10²-4.(-1).(-25)
∆=100-100
∆=0
x=-b±√∆/2a
x=-10-0/2.(-1)
x=-10/-2
x=5
S={5}