Question

fórmula de baskara
1) x-2x + 1 = 0
2) x2 + 10x + 25 = 0​

Answer 1

Resposta:

A) 1

B) 5

Explicação passo-a-passo:

a)

x-2x+1=0

Δ=2x-4.1.1

Δ=2²-4

Δ=4-4

Δ=0

x=-b±$\sqrt{\\}$Δ/2.a

x=-(-2)±$\sqrt{}$0/2

x'=1

x"=1

b)

Δ=10²-4.1.25

Δ=100-100

Δ=0

x=-b±√Δ/2.a

x= 10±0/2

x'=10+0/2=10/2=5

x"=10-0/2=10/2=5