Respostas

  • Usuário do Brainly
2014-07-24T01:35:41-03:00
A)

x²-2px+p²=0
Δ=4p²-4p²=0

x'=x'= \frac{2p}{2} =p

S={p }

b)
6x²-5mx+m²=0
Δ=25m²-24m²
Δ=m²
√Δ=√m²=m

x'= \frac{5m+m}{12} = \frac{6m}{12} = \frac{m}{2}

x"= \frac{5m-m}{12} = \frac{4m}{12} = \frac{m}{3}

S={ \frac{m}{2} , \frac{m}{3} }

c)
x²-2kx=0
x(x-2k)=0
x'=0

x-2k=0
x"=2k

S={0,2k}