Question

baskara
de 25 x ao quadrado menos 10x mais 1 igual a zero

Answer 1

25x² - 10 x + 1 = 0
Δ = 100 - 100
Δ = 0

x = 10 +√0/50
x = 10/50
x = 1/5                     S = { 1/5 }     ok

Answer 2

a=25 b=-10 c=1

∆=b²-4.a.c

∆= (-10)²-4.25.1

∆= 100 - 100

∆=0

X=-b+-√∆

2

X= - - 10+-√0

2

X¹=10+0=10=5

2 2

X²=10-0=10=5

2 2

S:(5,5)