Respostas

  • Usuário do Brainly
2014-08-25T00:20:47-03:00
Formula

x2-Sx +P=0

a)
S=1+3=4

P=1(3)=3

x2 -4x +3=0

b)

S=-3+15=12

P=-3(15)=-45

x2 +12x -45=0



c)

S=-12+12=0

P=-12(12)=-144

x^2 -144=0


d)

S=-a+5a=4a

P=-a(5a)=5a^2

x^2 -4a +5a2=0