Question

resolva as equações do 2 grau em R: a) 2x²+5x-3=0 b) 6x²+x-1=0 c) 6x²-13x+6=0 d) 5x²-11x +2=0​

Answer 1

Resolva pela fórmula de Báskara

6x^2-13x+6=0

delta=b^2-4ac

delta=(-13)^2-4.6.6

delta=169-144

delta=25

x=-b-/+ raiz de delta/2a

x=-(-13)-5/2.6

x=13-5/12

x=8/12 (:4)

x=2/3

x=-(-13)+5/2.6

x=13+5/12

x=18/12 (:6)

x=3/2