Respostas

  • Usuário do Brainly
2014-03-24T09:14:43-03:00
3 x^{2} -7x+2=0
Δ= b²-4.a.c
Δ= (-7²)-4.3.2
Δ= 49-24
Δ=25

x= -b +- √Δ/2a
x= -(-7) +- √25/2.3
x= 7 +- 5/6

x¹= 7 + 5/6= 12/6 = 2
x²= 7 - 5/6= 2/6 = 1/3